DEAR HARRIETTE: My in-laws’ 55th wedding anniversary is coming up soon, but unfortunately, my fatherin- law passed away last year, so this will be my mother-in-law’s first anniversary without him. It’s been a tough year for her. She misses her husband, and their relationship was the foundation of her life. I know this day is going to be especially hard for her, and I’ve been thinking a lot about h…