[Jess~]

If you have his address, try to go over and talk to both him and his mom. I know it might be scary and weird, but this is serious and I feel like at this point it can't be brushed aside, just because his mom is being a bitch about it. She needs to understand how serious this could potentially be.

I agree with the above poster that getting the school involved would make things much easier. I realize this is all probably a bit scary and awkward to bring up with people but it needs to be done at this point.