She's a sweetie, that's for sure. I haven't seen her in many movies, so I can't judge for myself too well, but I know for sure that she will have to carry out some killer acting skillz if she's going to pull off evil, creepy little Jane. As for the looks department, she's there. Stick some red contacts on her eyeballs and she's a vamp.
Oh, and it was very hard to keep my eyes off Chris Evans sitting next to her. Man, oh man. Hot stuff right there. ;] FlAME ON!