autistic all girls post 16 education?

so, this is kind of complicated, but i'm 15, i'm afab( assigned female at birth) but i identify as non binary. ideally i would be able to go to a mainstream sixth form, but the more i think back on my time in a  mainstream primary school, the more i'm remembering  how hard i found it.  i'm in an all gender specialist autistic school right now and i'm doing really well and i don't want to tempt fate, and i'm wondering if anyone had any suggestions of any all girls specialist autistic  schools that do post 16? i was looking at Limp's field grange, but I don't think they have a post 16. I'm usually more masculine presenting but i would describe my interests as being on the  more feminine side. (not that that's relevant, but in terms of making friends i tend to have more female friends than male friends.) i also tend to relate more to girls when it comes to being autistic, i'm still teaching myself to unmask and all that fun! (not really, i'm being sarcastic)  

sorry if this is long winded. thank you to anyone who's willing to read it.