Blood's thicker than water - always remember that when dealing with his family. I think from memory you may have mentioned H's family demonstrating that as well, so I'm not sure how well you get on with them in the broader scheme.
I'd just say "I'm solely focusing on S and myself right now, and havent had much to do with H. Please know that H's decision doesn't mean S and I wont be part of your life still'. Modify to suit of course, based on how well you get on.
Your own integrity is just that - your own. You don't need outside validation, least of all from H's family, to cement your integrity. His lies, deceit and sliminess will make itself apparent without you needing to tell anyone. Your quiet dignity will speak in greater volume than any retelling of what he's done or airing his dirty laundry.
Cheers, DS
Me: early 40's XW: nearly 50 T: 15 M: 5 BD: Jan 19 S:10 SS: 22 SD: 24
