I struggle to get my daughter to school

My eldest daughter often misses school due to her anxiety. She is autistic and has inattentive ADHD. When she stays home she is on her screen all day. This drives me crazy. She self harms if we put boundaries on her screen use. Her and I argue a lot also. We are relocating soon and I’m nervous about how she’s going to go. She can’t wait to leave school and home. She’s a great kid, awesome with people, funny and smart. I’d so love her to do well in life.