In need of advice and help

Good Morning 

I have a 11 year old daughter with autism. She is in main stream school P6 going into P7 after the holidays. The issue is we are having real issues with her getting up in the morning to go to school and then she refuses to go to school. She is physically bigger and stronger than myself and has potential to lash out. I can not force her to go to school. I feel like I have no control over her at the moment. I am currently signed off work due to her behaviour as it is causing me so much stress and I have been but on antidepressants aswell. Please help