I had a cat that ended up just being called Meanie. She actually kept people she didn’t like from coming in the front door.
Well, the two cats we have, my finacee named after artists. We have a 6-year old orange tabby named Pablo Picasso (Pico for short) and a 3 year old black siamese-alley mix named Gustav Klimt (Gus for short).
So, along this line, I thing Georgia O’Keefe (Maybe Geo or Gia for short) might be a cute name. 
Or you could go the way of my alcoholic friends’ cats: Kahlua, Bailey, Tequila, Sambuca, Ouzo, Stolichnaya, and Captain Morgan
Also, other female cat names I’ve liked:
Chloe
Zoey
Josie (as in Josie and the Pussycats)
Sasha
Sophie
Daisy
Jasmine
Grace
Phoebe
Priscilla
I’m also digging Dogma…cute irony!
And of course, there’s the ever popular Tuna Breath!
Chairman Miaow?
black and white? how about magpie?
We have three cats. One has a bobtail – I call her Waggs. My wife prefers Bunny. So, she has two names.
We have a calico tabby we called Peanut. She ballooned after getting spayed, so she’s often called Fatty, too (in a loving way, of course).
And, we have a black cat named Theodore, who we usually refer to as Li’l Dude (or, less often, Ma’ Teo) when he’s not getting into trouble.
As you can tell with the Waggs name, I like opposite names. Plus, Peanut turned out to be an opposite, too, since she’s so big.
How 'bout Zeus? It’s not a girl’s name, but I think it’s still cute for a little kitty. Plus, she’s somewhat temperamental and fiesty. Or, you could go with Hera.
Another suggestion: Keep waiting and it will come to you. You’ll just call her some name someday and it will stick.