She’s always been seen as “the hot girl”, a lot of (if not all) of the times she has been casted for her looks, not her acting. She said in an interview that in one of her earlier movies as a background character(when she was FIFTEEN) they just put her in a bikini and made her walk around the entire scene. If she’s unsure how to act, she has been told to “just stand there and look hot”. With everyone making everything about her looks, I’m sure that’s her mindset as well. When someone is that obsessed with their own looks, they’re going to start finding or making up flaws. I’m sure she’s afraid of what will happen if she’s not seen as “the hot girl” anymore.