Mo lived in a cage for three and a half years. She didn't know to come when called (she was always already there, in the cage). She had no idea how to walk on a leash, or what she was supposed to do when she was out on it . She wasn't house trained. She was petrified of the car. She didn't even undertand how to use stairs.
She now comes when called, even if she's hot on the trail of a dangerous squirrel. She's up and down the stairs, walks on a leash, and is even beginning to enjoy riding in the car. And she's mostly house trained. She misses once in a while.
Yes, they will damage some things at first. They have no idea what's valuable and what's not. They've never been allowed around anything that anyone cared about.
It's a tough position to be in, if you're not both ready to live with some impositions until she settles. I'm sure you are, but you need to see if Eddie can be persuaded to go along with it. It will take her some time to learn, because she probably just doesn't know.
Very best wishes,