DEAR ABBY: My father died three years ago. My parents were both close to his younger brother and his wife. For the past two years, I have suspected that my mother and my uncle have been having an affair. They live in different states and text back and forth. She has left her phone open when she has gone places with us, and the comments back and forth are very sexually oriented. I became suspicious when my uncle came to visit and they took a trip together and ended up staying overnight somewhere. A couple of months later, my aunt ...