We recently moved and our 10 year old dog has started to poop in the house – even after it has just come if from outside. What should we do?

I have a couple of questions regarding behavior I did not see in your questions section. I have a 10 year old, 10 lb., miniature female schnauzer whom I have had since she was 5 weeks old and whom I bottle fed. I also have a 3 year old, 50 lb., standard male schnauzer whom I have had since he was 6 months old. We have recently relocated to a new home in the redwoods of northern California from the desert. They seem to have adjusted to the move, the standard has even ceased his separation anxiety problem of peeing in the kitchen when left. The problem is that the female has started pooping and peeing in one room of the house, the study. I can take her out for hours, I can give them free access to the yard, and she still will wait and poop in that room. Also she has always had an aversion to the sounds made by a fireplace. Our fireplace is a major source of heat in our home and I would like to get her to quit running and hiding when it is lit. She also used to love going outdoors and now she will stand at the top of the stairs on the porch and stare at us when we go into the yard, then she will run back into the house. What is wrong?