Sorry if I am missing the point but surely he was acquitted?
So he was prosecuted and the allegations were disbelieved?
But if the jury were hung then he was prosecuted and the allegations rejected effectively.
I'm really sorry but I'm afraid I cannot immediately see a negligence issue.
Also, the other problem is that, even if there were negligence, the emotional impact upon you was too remote from the wrongful act. The fundamental problem is that you were free to leave. I understand why you may have chosen not to leave but that doesn't render the authorities liable for your choice not to do so.
I'm very sorry but that is a reality. At the highest point there may be a complaint although I wouldn't recommend it.
Can i clarify anything for you?