In the red carpet pre show thing where they showed clips from the new episode they showed a clip where Angela goes into Sylar's cell and brings in Bridget Bailey and describes her power, then Sylar asks what is she going to do to him and she says "feed you" and then she leaves and we hear Sylar taking her ability.
Now they didnt show this in the episode, maybe it will be in next weeks episode but yeah this pretty much proves Angela is evil.

is there a video of this? i watched the show before 'the second coming' and i didnt see this.

will show us in the next episode "one of us one of them"....

id love to know more about her