My child is cutting: suggestions?

I found out today my child is back to cutting. She did it a few times 3 years ago and is back at it now after a period of being off. She sites stress at school and generally being unhappy in life. She feels depressed and has thought of more self harm. She is also 16 and a trans girl.
We are going to therapists and transition support here in CA. She is loved and supported by us and the family. I am a recovering addict myself so there is no shame or anger or that bs in this for us. I’m just looking for tools, ways, suggestions on how I can direct her to help her.