Hello FC88
Welcome to the community I'm glad you've found us, parents here understand, some in similar situations to you, you are not alone
That's a difficult situation you're in they are adults financially dependent on you and your husband, your daughter talks of planning for a family you'll support?
Can you for a moment step back from the drama, imagine you're not there fixing, how do think they'd manage you handing back them their responsibility, how do feel about that? Many of us join where you are, lesson 2 to your right is a good place to start, if our current approach is not working, change it.
Small, gentle steps of change for us here and lots of learning worked for me.
We are here, walking with you.
WDx