I’ve seen your replies to comments here and you need to get your head out of your ass and stop making this about you. As someone who was in a very similar situation as she was at that age, when she’s saying she “just needs to go” she’s not talking about running away. She’s talking about killing herself.
I don’t care if you “can’t believe that” or as you’ve said you “don’t want to believe that”, stfu and help the person who is actually suffering, YOUR DAUGHTER. Immediately contact her therapist and get her committed, help, something.
Stop stewing in your own fantasy of getting your “sweet little girl back” or you won’t have her back at all.
I know this comes off as aggressive and it is. My mother was just like you and she did nearly lose me. And then she did when I was able to go NC because she made MY TRAUMA about her and how she felt about it instead of facing reality and getting me the help I needed.
Help your daughter. NOW.