I need a name for a character in my book?

i'm writing a book about a girl an her twin brother Gabriel (Gabe). Gabe gets bitten and turned into a vampire and confides in his sister that he doesn't want to have to bite and innocent person. The girl tells him to bite her and that it will be easier for them to get through it together. they are living with their father (their mother has commited suicide) and are pretty self sufficent. She is tall and lanky and has turquise eyes and dark brown hair. I want something pretty and unique, but not somethign made up or to difficult to type over and over. I like Sophie and Olivia, maybe even Colette. What do you guys think? Please help me! Sorry for any typos, i hate typing on this laptop, the keys are too small!!!