DEAR ABBY: My granddaughter, “Emily,” is 13. I have been very involved with her all her life. My daughter, “Ginger,” is divorced and has had a boyfriend, “Greg,” for about three years, but there has been no talk of marriage. Greg’s mother has told Emily to call her “Grandma.” Emily is OK with that, but it hurt my feelings, Abby. I feel that Greg’s mother should realize she’s using a title that’s not hers. I realize she’s trying to make Emily feel like part of their family, but to me, this is my title, not hers. She has known Emily ...