DEAR ABBY: My brother lost his wife, the love of his life, three years ago. He has three children. His oldest, a 25-year-old daughter, “Jenny,” told him that “when you marry, it is for life.” She has threatened that if he dates someone or sees anyone, she will be out of his life and he won’t be able to see his future grandchildren. (Jenny is getting married next summer.)

My brother is very upset. He wants to settle this argument before she is married. He hasn’t dated anyone but feels she shouldn’t be trying to control his life. Please help, Abby. — SISTER KATY IN MAINE

DEAR SISTER KATY: I’m very sorry Jenny lost her mother, but her attitude is off base. At 25, it’s time for her to grow up and stop making selfish, childish threats she will regret.