Daughter biting

Hi again. I was here a few months ago, I intended to stay and get to know everyone better but life took over as it usually does. 

I need some help and guidance with my daughter. She has a diagnosis of autism and originally was obsessed with nibbling everything, her toys, me though never her dad and her clothes. But this has got worse in the last month. She's gone from gently nibbling to actually biting very hard, so hard that she has made my hands bleed and hurts her teeth. I did want to take her to the gp but they won't see her, only doing phone calls here still but the gp was so unhelpful said that she'll probably grow out of it. Well that's not good enough, she's hurting herself and hurting me. I'm worried she'll chip a tooth in the end as she literally bites everything. Please help us with this.