The Juke is probably the smallest.
No idea about camera, but you can sort by megapixels (just click “more features”).
Not sure which one has the most internal memory, but a lot of them offer a mini SD slot, so that shouldn’t be a problem. I’m sure you can get those that are bigger than a gig these days.
The ones with QWERTYs are the Alias, the EnV, and all the BlackBerry and smart phones.
The coolest, though, by far, is the Decoy. It is a slider phone, which I insist on (I hate the clamshell “flip” phones), AND, the bluetooth earpiece is built right INTO the phone! You don’t ever have to charge your bluetooth, and it’s ALWAYS connected. That’s the one I’d recomend, for sure!
Verizon uses proprietary software, so although you don’t have to buy your phone from them, you have to buy one that’s designed for Verizon. Also, it can’t be one of the type that has a SIM card.
The “more features” on that site is really cool though, but you don’t need it, just get the Decoy. Bet your sis will buy one for herself after she sees yours.