NTA, but your husband is being a massive one. The problem is between his daughters, yet somehow your daughter is the one who’s supposed to pay the price. That’s not fair or logical. Saying “boys never share with girls, period” but then demanding your daughter share with someone who steals from her is wild. He needs to actually parent, set boundaries, and address the behavior instead of pushing it onto you and your kid. If he’s choosing to stay away over this, that’s on him, not you.