I know, right? "Why couldn't you have just named them all
Bob..." XD
I don't immediately think of Twilight, but if someone mentions the association I have a hard time forgetting about it. I don't think it's TOO Twilight-ified, though. I like it, although I probably wouldn't use it myself. I don't know anyone named
Rosalie. When I hear it I picture someone between the ages of 9 and 30; I can imagine older but it's a bit hard to picture younger. I think Lie /
Lee or
Lia is the best nn for it;
Rosie is sort of boring IMO.