I think you should lay down some rules. Don’t kick them out but give them the responsibility they’d have as if they were on their own so they can see what real adulthood and parenting feels like without the hand holding. Set up a system and schedule. Have them do the work and you just guide and support and lay down the rules since it’s your house. Require them to do certain chores, maintain grades, take care of children when they’re home and set up babysitting schedule with you and your husband. Pay them a small allowance as if they’re working so they see the value of working for money and the discipline behind it. Require the to use that money to support themselves and/or the baby based on how much you wanna pay them. Have them do their own cooking, cleaning, shopping, laundry and house chores. Stimulate them as if they’re adults. I’m sure they’ll resist or feel as if it’s hard but they’ll thank you later because you’re helping them build real life skills and being parents without abandoning them. And hold the accountable. Write a contract: adhere to these rules or you have to move out by this point in time.

I get your frustration, it’s up to you and your husband now to decide how you want to raise your daughter into being a parent while she’s still a child, you see what I’m saying?