why? because she is still mentally and emotionally a teen. Since she didnt have a normal childhood she is acting out like a 15-16 yr old does in a rebellious manner. She is just not as mature as a normal 20 year old.
what is ironic is that someone who says they want to be an adult is still wearing a kiddie hairstyle, playing with bears, still doing the immature tongue wag selfie look, dressing like a teen and acting like a teen gone wild