As for her going to her bed when your wife goes out, when I go to work in the morning my husband (retired) says that as soon as the garage door closes they both get up on the couch. He said they stay there and sleep most of the day except for once or twice to go outside. Then about 15minutes before Iam due home they get up and begin to run around, looking out the front window and door for my car to pull into the drive.
I think it's a pack instinct, when a member of their pack is missing they wait. Do they think we went out to hunt for food as wild animals do? They always seem interested in what I bring home in shopping bags