Dog won't sleep in the dog house

I had a lab/retriever mix about 55 pounds. She lived outside for 17 years and had 1 acre to roam on. As a puppy she hated coming back in the house. She had a dog house with a heated pad that
turned on at 32 degrees F. If it was snowing and sometimes raining she would leave her house and go lay on the concrete. Crazy dog. If it was in the teens I would make her go into the garage or laundry room in the house. She couldn’t wait to be released. Again…crazy dog.