DEAR AMY: We are having an issue with our daughter and son-in-law regarding the use of a guesthouse. They live a day’s drive from us, so when we visit we like to stay for several days. We try to visit at least monthly. We decided to find a home that had a mother-in-law unit separate from the main house. We helped (substantially) in the purchase of their home in order to have this unit be our separate space. We felt this was a better option than buying a small studio or condo (about the same amount regarding the investment) to be close to them and the grandchildren. They were excited to do this…
