Throughout the course [of Twilight], you get to see a little...

Throughout the course [of Twilight], you get to see a little more of her vampiric side, because I think she's this vampire with a heart of gold and so that was kind of fun - to show her be a little tough and a little fierce, and to show that she has a little bit of a sassy side when she's dealing with the wolves or with Jacob. So I feel like I got to really round [Alice Cullen] out quite nicely.