Controlling behaviour

Hi there. 
My eleven year old daughter is ASD high functioning and has just started high school. It’s not gone well and since October she’s not been able to attend for more than two hours a day. The school are helping her build back up. But since this she has started refusing to let me (her mother) out of the house. She will throw herself in front of the door and attack me if I try to leave. She will happily come with me but won’t allow me anywhere on my own. To be honest I’m now on anti depressants and scared to upset her. 
is this a common ASD trait? Is she genuinely afraid or just trying to control me? I’m afraid I will soon lose my job as I can’t go to the office

any advice welcome!