AFAIK she watched it when it was released. There should be no big problem if she would watch it because she watch it in a different way.
She's one of the actors of this movie and she knows how all this different scenes where made. I guess she would have different feelings while watching it than most of us or most of the same-aged people.
She wouldn't have fear or be shocked by some controversally or violent scenes, she just would remember the hard work while filming this scene and maybe she's enjoyed when she see the results of her work.
Greets from Germany, marcel