I'd give her skills an 8. Only hated her acting in earlier projects when she was really young and I thought she was bad in Freak Show (though I liked one scene or two). She was GREAT in Coven and at the end of Scream 4 . I also loved her in Adult World.
She has literally just been playing the same character over and over again It was cute in Coven but now its just annoying. I think it's mostly Ryan Murphy's fault though