She's really cute, amazing skin. I think she's got great acting chops, but it's going to be hard for her to break out of the "nerdy awkward cool smart" girl roles. I honestly cannot imagine her in a strong/seductive femme fatale type role.
Who says she has to play a femme fatale-type role? Are you saying that there are only two types of roles for women? I don't think her role as the architect in Inception was anything like that. I'm also guessing you've never seen Hard Candy. Definitely a 'strong' character.