My mom wants my son to call her GK (G stands for Grandma and K stands for her name Kinda) She says she's way to young to be called grandma (she's 38) but my mil don't mind being called grandma (she's 51)
my kids call my mom Grandma, but we're trying to get my oldest to call her by her name(Rhonda), since she's a pos and won't be around them. and my oldest calls my MIL Grandma too but my youngest(1yrs) calls her Ma since that's what the other granddaughter calls her(they speak Spanish)