Idk what to do 😩

My husband’s mother died yesterday and they didn’t have a great relationship. He hadn’t spoken to her in over 3 years. She was a terrible mother to him and an even worst grandmother to our children. Even worse to my stepson- she literally said he wasn’t her grandchild. My step son only met her once and he’s 7. My son only met her twice and he’s 4 and my daughter only met her once and she’s 3. Beside the point, she sucked. But she was still my husbands mom so obviously he’s very upset. We also don’t talk to the rest of the family because they are as if not more horrible than her. We went over there last night because everyone was there for dinner and just to see each other and his sister asked us to come over. Everything was fine. People were crying but no drama. This morning at literally 5 am his niece messages me and asks why we came, no one wanted us there, we aren’t welcome and neither are our children. They have literally been so mean to us for no reason. Like it just makes me sit here and cry all morning because my husbands mom just died and as much as I didn’t like her and she was horrible to him and my kids he’s hurting really bad. And now he’s told we’re not even wanted at her funeral when they literally told us last night when the funeral was and thank you so much for being there. I just don’t get it and I don’t know how to help him through it.