My MIL was in her late 30"s when we met, and she told me to call her Dell, so that is what I always called her, FIL was Pop. My first SIL called me Mom from the get-go, but DILs all called me Carol. My children call me Mom, grands called me Mawma and then as they got around age four, they started saying grandma. I would refer to myself both ways to them so the choice was really theirs. I think it is very cute for little ones to call grands by the cutie names, but not when they are older. My children called my mother grandma and hubs mom, grandma Dell. Their friends, for the most part ,called me MOm or Carol. I actually prefer being called by my given name rather than Mrs. ? or Don's wife/ I am not a formal person, I am me, CAROL.