I told H it was unfair to do that to S6 when he was trying to help.
T0, this is a trap that I'd like to bring your attention toward.
For better or for worse, H is the kids' father. You need to not micromanage his parenting decisions like this. Step out. He's their father, and you are equal as parents.
When H is in charge at your house, H is in charge. Step back and let him make the decisions, for better or for worse. Also let him handle the consequences of his decisions. Kids might come running to you to try to get you to overrule their dad and it's important that you not fall into that trap.
To do otherwise is yet another trap where H can say he can't do anything right. And, putting this in perspective, this isn't abuse. Your kids are going to be just fine in spite of any temporary hurt feelings!
Sorry for the drive-by advice, and focus on the negative, but I don't have much time!
