Congrats on getting a cat. I think you'll come up with the right name after watching her for a bit. If I might quote a name of a Joe Walsh album to you:
"
You Bought It
You Name it."
You and your family really are in the best position to come up with a proper name. Personally, I tend to use common human names for cats, so I can call out to them and be pointedly ignored.
Good luck Ethan.
(pic from henleyfan's site)