She sounds really cool-- and I think it's within the artistic license to have back-wings instead of arm-wings, if that's what you like the look of most. I love ravens, they're some of the coolest birds...
I don't know what kind of a name you really want most, but you can spend some time on baby name sites and try out the ones you like until one fits, pick the ethnic background you like, search by meaning... say some names out loud to feel how they roll off the tongue, if that helps. (though at least in Celtic and Old English, there are a few names that mean 'raven'... but that might be a little on the nose)
Anyway, the description of her appearance and what you've said about her character just all sounds neat.