i feel the need to point out the other side.....
my DS was bullied. mercilessly, however alot of it went over his head - never over mine though. i spent his entire school life in pursuit of the perfect school, i found one with 400 kids, good ethos, approachable SENCO, but even there things were not perfect.
that said - as they age - it does get better for them, DS was intelligent, did A levels, now at uni....has a part time job because he taught himself to computer programme at the age of 11 and touted for business.
his mate with AS.
who was pulled out of school at age 11 due to bullying does not work. He has no formal qualifications and volunteers at the local library 2 days a week. He lives on his benefits. He never had to deal with the bullies - true. but he will not work either.
When DS was assessed for his DX by elizabeth Newson she stated he should stay in mainstream education - that it was the right place for him, but he should have been statemented. he wasnt. i didnt fight hard enough for that - but even that would not have prevented him from encountering fuckwits who like to take the piss out of difference. as it was he was lucky and shared another boys TA.
OP - you need to a school that works for your DD as best as possible. Visit other schools, talk to the heads, i quickly sussed out who would be sympathetic and who wouldnt be.
You know your own DD, as hard as it was i had to take a longer term view and i felt what was right for DS. i did the best i could do for him and found him a tiny school with a lovely understanding SENCO and, most of the teachers were good with him (not all)
there is rarely a perfect solution. go with your instincts on whats best for your girl.