I worked over ten years in child and elderly abuse/neglect/exploitation. Over 500 investigations mimimum. Got where I could spot sexual abuse in a 4 or 5 page report in the first half page. 3 dead children in the first 5 years.
Been on anitdepressants and antianxiety meds since, and I was the investigator, not the victim. Oh yes, I was raising an autistic kid too.
Keep up the good care you've been giving her. Tougher on you than you thought, isn't it? Bet it's really tougher on her.
Just keep reassuring her that you and God are flat-out-refusing to give up on up on her.