One more, but with an internal gear rear hub, which is probably better for someone who rides infrequently and not used to gears.
Great. Do you want my address to send the extra money too?
Just offering bikes that are far better quality and that fall far below your $1500 ‘going nuts’ level bike. Next time, specify that $400 is your crazy level.
this right here - let her try out bikes!!
Dude, go with the color you think she’ll like best. Ignore other posters’ concerns about quality or fit; I doubt your wife is going to ride aggressively up mountains, she’ll probably rarely be off pavement. If she finds that biking is her new passion, she’ll buy a very different bike for herself in a year or two, and it will have nothing to do with which entry-level bike you bought. (But that’s not gonna happen. She’s gonna ride it up to 7-Eleven for a diet Coke, not on a hundred mile riding-camping trip.)
Trying not to be rude I have to emphasize, particularly for adults, that bikes aren’t toys, they’re vehicles. One of your options might not actually break down as a result of her infrequent riding, but it will be inordinately heavy with possibly sloppy shifting that could be a deterrent for her. Additionally, consider that good brakes, by themselves, can be more expensive than the bike itself. Also, if it has steel rims (instead of alloy rims), braking performance when wet will be extremely poor. And it doesn’t have to be raining at the time - you could have wet roads an hour or so after rain and that can affect braking performance. Is that something you want?
Please, please go to a good bike shop. They won’t try to rip you off and you will get a product with more standardized sizes and fittings. In Canada, several years ago, Canadian Tire (for non-Canadians it’s been a long existing automotive, hardware, sports, and home appliance store, sold a cruiser bike that was sort of “romantic”, old-timey looking, complete with a rear rack that would be completely incompatible with any panniers. At a real bike shop you can probably buy what you want for about $600and it will be reliable. After all, would you go and buy a $3000 car because it has a Hi Catty look?
Btw I used to be a professional cycling safety instructor and I chose the “velo” in my username for a reason. Please don’t buy a toy for your wife.
The bikes I linked to weren’t picked randomly because they are pink, but for the minimum quality level that a rider should expect for a decent bike AND at a price that wouldn’t shock the OP (though I failed at that I see). For someone who doesn’t ride frequently I would suggest the internal geared rear hub (it only has one shifter, not two, and it’s not likely to be easily knocked out of adjustment). Something a novice rider would appreciate. But the OP is not interested.
As for the OP, the three bikes you linked to are the lowest quality level - pretty much junk. So which one to buy? Pick the one that is at a store closest to you. It’s not worth wasting any gas to pick one over the other two.
The best bike I ever had,I bought at a pawn shop. I was looking at one and a young guy walked up and said “excuse me, but you could ride this one better.” I have short legs and a long torso and thanks to that tattooed stranger, I got a pretty good Cannondale for $40. Give your wife a card with the gift certificate to buy the bike and find someone who knows about bikes, preferably not a store salesman, too help her find one that is right for her. Real bike enthusiasts aren’t that hard to find. After she’s found a good bike for her style, you can both bedazzle it to your mutual content. But never buy a bike on looks first.
nm
I love the argyle on #2. I also like this one from Toys R Us
kayaker - I should have more specific:D
Dag Otto - about the internal gears, that’s a great point. I have two bikes with Shimano Nexus 8 speed hub systems. One is my winter bike, and the other is my city bike. The OP should seriously consider this option as it is virtually maintenance free. This was really evident on my winter bike, which was originally a mountain bike on which I had to replace freewheels once or twice each year because of salt and sand. Once I retrofitted it with the internal system my maintenance frequency dropped to once every four years.
The OP might want to look at used bikes (one of my previous bikes was an entry level touring bike that I bought from a bike rental company and it served me very well for about 10 years of regular use).
Or at least reminded the OP to include the batteries. 
(It just needed saying)
Back to being partly serious
Considering what we’ve learned of pkbites here I would save that more for “Stage 2” if his wife actually uses and enjoys the first bike. Chances of finding a pink bike may be slim; I watched the bike trail today for about an hour and only saw one lady/girl sized pink bike go by. So going used may mean going not-pink and I don’t see that as a viable option.
However if she just loves riding and “outgrows” Hello Kitty Stage One, starting used for Hello Kitty Stage Two probably should be a good idea. He can have the thing painted or powdercoated any hue he wants and maybe even add some little personal touch on the front fender. The stuff I ride has motors but I learned as a kid that making something new “your own” isn’t cost effective - it can be done starting used a whole lot cheaper.
I ordered a Trek Domane 4.5 Disc on Saturday, and it should arrive next Sunday. This was the result of a lot of test rides of different brands, and a buttload of research. I don’t recommend that for your wife.
But I can defend the big box bikes a little bit. They’re all I’ve ever owned, and the only problems I’ve ever had with them were theft, punctured tires, and destroyed rims. I still have my generic non-name Target mountain bike bought in 1997 for under $200. The replaceable parts are all standard components (certainly low quality, but standard). I’ve only got logs since April 2012, but I’ve put 4,000 miles on it since then.
If you’re wife is just going to fart around the neighborhood, a cheapo bike (if it’s good enough not to fall apart immediately) should be perfectly fine.
I fell in love with “real” road bikes over the last couple of years (my rich coworkers are generous with sharing), before finally deciding to bit the bullet and get one myself. Trust me; there’s no way to compare a high-quality bike with a big box store bike. The experience and pleasure and handling and everything is completely different. But for farting around the neighborhood, it’s a waste of money. Heck, if I run to the store, I won’t take the Domane (#1 crime in Nanjing is bike theft), I’ll take my oldest, Target, generic dirt bike, because it’s trustworthy and mechanically sound.
A quick suggestion to the OP - have you checked out Priority Bicycles? Very neat, my man friend and I just bought ours at <$400 bucks. They’re well made, low maintenence and fun to ride. I’m pretty much like your wife - a little afraid of getting on a bike after 30+ years, so this is a nice bike to ease back in with. Granted, there’s no Hello Kitty stuff but you can always customize with stickers and streamers.
#1 looks more Hello Kitty friendly, but #2 is probably a better bike. It looks sturdier and has the rear tray for all your storage needs. #2 also appears to have great reviews. It would be my choice. Hope she likes whichever one you choose.
If there is anything that I would question the safety of it’s this. No hand brakes and coaster brake for an internally geared bike using a belt drive? I don’t really see how it serves the OP’s purposes. And saying it’s under $400 when it’s $399 is kind of silly IMHO.
We are going to get pictures once you get it and Hello Kitty it all up, right?
While I am not the OP’s wife, I am very much like her in the “ooohh pretty, want now” arena, hence my Schwinn in the garage gathering dust for the last 22 months. The one I have is similar to #2 and it served its purpose well as I recreated the wicked witch from The Wizard of Oz, with terrier puppy and all on the bike (my dog is now in therapy).
Get #2, let her go GAGA decorating it and then be ok with it (like it sounds you will be) when she stops riding it.
GROTONIAN is spot on for its potential use! Good Luck!!
Yeah. It’s going to be gaudy as hell with all the stuff I got for it.
Go whole hog and get a Monkey Light for her.
And no, I can’t help pay for it.