I'm sorry for your loss. I really can't add anything that hasn't all ready been said. I know when my mother passed away, my DH and I had bought a small house by us, and set it up, so she could still live in comfort. I could not bring myself to go into that house, I just took it one day at a time.
Just think, you and your DH worked well together. He would want you to keep on with the beautiful quilts that you made.
He's watching over you, I'm sure