How do I help my daughter

I have a 17 year old daughter who I am 99% sure is autistic. She does not wish to be labelled so will not seek a diagnosis. 

My problem is that she seems severely depressed and has severe anxiety stopping her from doing any kind of social thing. SHe will not leave the room. 

as shes under 18 drs wont help and there is no way she will do talking therapies. Please help what do I do:-(

she won’t even open up to me. I know she’s really depressed but she won’t let me help