I know how you feel. I just came back from my 3-day vacation away in which I had to leave Frankie with my husband's brother. We talked about Frankie constantly!
You sound like you have a great babysitter! How did you find them, and if you don't mind me asking, how much do they charge? I'm going away in October, and was looking at other options for a dogsitter other than my husband's brother.