Teen devastated by cyberbullying

DEAR HARRIETTE: My 17-year-old daughter recently posted a picture of herself on Instagram. She was so excited because the photos were from a concert where her favorite band performed. Someone she thought was her friend took a screenshot of that photo and used it in an incredibly hurtful way: She posted the picture on a private Snapchat story and cruelly made fun of my daughter, calling her ugly and encouraging others to laugh at her.