I hated that my kids went through that too. My D who is disabled went from a calm, cool, sweetie pie and started having these horrible outbursts, crying, screaming, etc. My S was like my H's best friend until my S let him have it and told him what he thought of him.
IMO, it sounds like your H is in the withdrawl stage. When he told your D that things change, people change is what my H told me so many times I wanted to throw up! Yes, they change,,,,they change into alien monsters that are so selfish. They don't even realise what is going on.
Let your D sound off to your H and get it off her chest. Who knows maybe something will sink in! LOL
