My favorite antagonist in all of Berserk has this name and honestly I fell in love with it because of that. Honestly have used it in my writing because of this!
It honestly kind of sounds like a name for a type of medicine to me. I like Rosaline better. (By the way, rosin, not Rosine, is the thing used for violin bow strings, and is pronounced differently)
I love this name - it's very graceful-sounding. Also, in Charlotte Bronte's last novel "Villette", Rosine is a lesser character. I think she works at the school or something.