ADHD daughter self harming - Advice?

Hi, all. My daughter is 12yo and we recently found out that she has been experimenting with cutting. To my knowledge, she has done it twice. It looks like cat scratches all over her arm and I am desperate to know how to help.

She was diagnosed with ADHD in the third grade. I would say that she has the typical presentation for a girl - not hyperactive, but inattentive. She struggles to pay attention in school, but she has always done OK academically. She has always had friends, but has dealt with some social anxiety. We never medicated her ADHD because she always seemed to be doing OK.

Fast forward to this year…. She is in 7th grade and this year has been so, so tough. She started pulling her hair out in the fall and we got her into therapy. She never connected with that therapist and she wanted to stop going after about five weeks, so we let her. Honestly she seemed to be doing better. Now I see that was a mistake. She recently experienced her first breakup and has been really hurt; this has been the reason she started cutting.

I have read about the correlation between ADHD and self harm behaviors and I certainly see a lot of these characteristics in her. She definitely has an intrinsic, compulsive type need for stimulation, and really struggles with emotional regulation. I feel like I am seeing that ADHD/self harm connection in real time and it totally makes sense.

My question for those of you who may have experience with both ADHD and self harm is this: Should we focus on treating the ADHD first? Would ADHD meds potentially decrease her compulsive need to pick/pull/scratch? Since she did not enjoy her first experience with therapy, she is very very hesitant to go back, so I am trying to really be thoughtful about how we approach this. If you have any suggestions at all, please share! I am so devastated for her and don’t know how to help.