The problem is going to be finding out when the case will be heard.
The first hearing will be at a local magistrates court, but other than going to the court each day and looking at the days court list I don't see how you can do it. Then if it is sent to Crown court it could be many months before it is heard. You may have to sit in the public gallery to find out what happened.
My own son was sexually abused by a family friend who we had allowed to stay with us when he was made homeless. I was a witness at the trial. Even then I did not have a 'right' to know what his sentence was. As I was a witness I could not sit in the public gallery.
The court clerk told me as a favour, he did not have to say anything.
He got 5 years, put on the sex offenders register, plus a ban on coming within 100 yds of our house.