Learning to be crated as an adult is sort of like having a puppy again. As is moving to a new house. It might take some time before she is on schedule again.
Why isn’t he a fan of the dog? (Is this the “spouse’s dog” or something?)
To be honest I’d recommend going back to pretending the dog is an 8 week old puppy and building up from there. Not sure that is what he will want to hear if he’s already thinking of moving the dog to the garage. Does he still have the other dog? And where does it sleep?