Oprah did interviews with her. She talks about being "bullied" in school (seems that being bullied is an umbrella term for people talking about you or making fun of you), and how she misses her father.
She was tweeting about why tears taste salty.
I imagine that this time period is trying for her. Being 15 yrs old, wanting to date, hang out and be "normal", and you are viewed as an outsider.