Girlfriend’s mother refuses to acknowledge reality

DEAR ABBY: I have been with my girlfriend, “Kim,” for a year and a half. We are both in our 40s and very independent. Her mother struggles with our relationship because we are two women. She has told Kim our relationship is an embarrassment for her. She didn’t know her daughter is a lesbian until we began seeing each other. Kim’s mother has said that if I were a man, she would be thrilled. She knows I love her daughter and treat her well, but she can’t get over the fact that we are gay.