Daugther thinks my husband is first than them

I have 3 children from previous marriage , they are adults now. My daughter got married and she has a baby, husband is in Afghanistan (he's a marine); my daughter has strong character and last year she had and incident with her husband, he hit her and he broke my house's door, my husband got really upset and told my daughter that she was welcome home with the baby but not him, because he didn't respect our house. My daughter didn't like that and since then she doesn't talk to my husband. Last Saturday my daughter slam her door , and my husband called her and told her that he wanted to talk to her, she started screaming at him, and at the end she ended up living home; I felt so bad i spent the whole day crying, but my daughter thinks that i prefer my husband and not them; I met my husband when my 3rd child was 1 yr old, and since then we've have been togheter , my husband is the one who supported them when they were little and he was there for them, but it seem that because of my daughter they're not talking to him. My dauguther is 22 Yrs old, and it seems she doesn't understand anything, My husband and I worked so hard to give them a house and give them the best we could, and now she thinks that i prefer my husband and that i don't defend her, need advise ASAP...