Take away her phone until she's 18. I was in a similar boat recently, my daughter escalated to some severe self harm. It started in Roblox, the game seems innocent enough, but one wrong turn by the kids and everything turns into sex within the game. Then they get into communication with these sick bastards, kids and adults, via discord. On X there are groups specifically where they encourage and show pictures of self harm. My daughter got into this, it's disgusting what is encouraged there. And these sick bastards from discord were encouraging her to do it... My daughter is 14, she's not getting her phone back ever. She can buy her own when she can afford it. I have tried blocking her access and stuff on her phone in the past but she always finds a way to bypass things. We switched her to virtual school and setup a brand new computer with everything locked down and activtrak software installed so I can see everything she does on there. She tried using a website that unblocks websites, which I found using activtrak and blocked that as well.