My 93-year-old father emerged as a different person when my mother was diagnosed with Alzheimer’s five years ago. He became independent, assertive, interested and engaging. When my mother died in October, he even became a bit spiritual. He’s certainly not the exhausted father with whom I grew up, who often didn’t know what to say to me. As a teenager and young adult, I never thought we would have much of a relationship. But now, as I approach 60 and he nears 94, the engagement between us has blossomed, as it has with my brother and all our children. The relationship he now has with my wife has become his most significant. She handles his money.