It doesnt make sense that the neighbour would still want help if he had raped and assaulted her ten years ago- only possible reason could be if she had somehow compartmentalised. I'm sure the police will uncover the problem.
If I were you, I'd phone a solicitor tomorrow and ask to have one on retainer, so you'll have legal cover whenever you want it.
I've got another 'keen'... Ouch!