So many stressors for kids these days with social media and a crazy world. 16 is a hard time for females (being girls and women at the same time). Try to make sure she can be honest with you if she needs to talk, give her space if she needs it, and remind her how proud you are.That I don't know.... She's my oldest...Best, Sweetest Girl ever, that's why I'm struggling. Never seen this before!
Long story, short; it will be alright.... just the challenges that present themselves day to day......
Best wishes.