My daughter is now 14 but recently she made an allegation against a boy four years older than her who went to her school two years ago. She says that when she was 12 and he was 16 the boy would touch her boobs and vaginal area, her bottom etc. and try to go up her skirt. He would push her on the floor or against a wall often to do this. Other older kids watched this and filmed it sometimes or took photographs. This happened on a daily basis and he apparently threatened on many an occasion that he would "go the whole way" and would "ing do her" if they weren't at school. He bullied her as well, physically and verbally. It is thought he took drugs and had a knife. My daughter has been a victim of bullying by many of the older boys, mainly at her school but some outside of her school, for a long time. We have taken this matter up with school who have now taken it up with the Police as well and the Police Detective Inspector assigned to her case is soon going to be questioning the boy and a few others she mentioned in her statement.
The problem is, my daughter has Asperger's Syndrome and cannot name any possible witnesses who aren't friends of the offending male and this worries us as it means if these people, when questioned, decide to say she is lying and tell them he hasn't done anything then of course, she won't be believed. There are some things that have happened in and out of school, cases of general bullying, severe physical violence and in two cases, animal abuse in the midst of some bullying. She has been proved to be telling the truth for these, and/or has witnesses who say that she is telling the truth.
I am wondering if my partner and I should urge her to inform the DI of these incidents, as proof that she has been bullied in many ways before, and evidence to help them believe her?

You probably should give them all the evidence you have and allow the detectives to determine if it is relevant.

But this guy sounds like a real piece of work. I am guessing his background and other incidents won't go in his favor.

'The problem is, my daughter has Asperger's Syndrome and cannot name any possible witnesses who aren't friends of the offending male.. '

I'm a little puzzled by that sentence. First in respect to the fact that a lot may be happening without your knowledge both in and out of school, and maybe she needs a little more protective watching and more structured activity. Second is what Asperger's has to do with not being able to name names. Either she knows who they are or she doesn't. If she can't remember names because of her syndrome, how is she able to learn regular courses?

As for the police believing her, I think her doctor or therapist if she has one can testify as to her truthfulness vs making things up. As can you and any other involved parties, and you can do some work talking to any parents of teens who know her.

I think I should rephrase it maybe. I mean that her Asperger's means that while she can name numerous details about the boy e.g. the ratio of the length of his fingers to his hands, the exact shade of maroon his sweater was, what his eyes were doing etc. she cannot remember who was around and the few people she can remember that were there are all friends of the boy. She has high-functioning Asperger's and is extremely clever; she has done her GCSE Spanish two years early and easily received 94.6%, which was a firm middle A*. It's not easy to explain, even top neurologists have a tough time with it!

OK, that sounds understandable. I still am concerned that she is in puberty and being harassed and bullied both in school and out, with lots of sexual threats, that she took 2 years to tell you about this one boy, and that maybe she needs more protection especially outside of school hours.