I totally understand, a few weeks ago I took an overnight trip and I was so nervous because Corkscrew and Tibby had never been left alone before. I'd always had a roommate and we would arrange our trips so that one of us would always be home. So I had a petsitter come that evening and morning to check up on them. Corkscrew is also a door darter, so I was scared he would run away. But when I came home they were both happy to see me, I could tell that while the sitter was here she gave them lots of attention.