I would simply leave the crate open , within the kitchen. And try to make it inviting. maybe you could tie a piece of rawhide somewhere inside. DO not force him in. If he will get in it on his own his whole attitude about it may change.
I can really really feel. About 16 years ago I got a farm puppy. While I don't believe c.j. (the dog) was removed from momma to soon, I know she was out in a barn for 8 weeks, with little human interaction. She was the MOST FREAKED OUT DOG I'd ever seen. She got better but literally, she was always a headache, till the age of 12 when she had to be put down due to brain cancer. I loved her and I called her my box of rocks.
The other suggestion that I would make is start getting her out on a leash and get her leash trained as soon as you can. Activity more than anything in the world seems to help dogs with psychological issues.
I have an invisible fence and once the training is done, it is the BOMB. We love it. Is there a kennel or something outside she could stay in during the day?