I am pregnant at the moment. My df has a partner who is to all intents and purposes my step mum...she's been around for ten years. She has her own dc and gc. I'd like her to be called granny but i'm not sure whether get children might be offended by this. Should I ask them before mentioning it to her? My own mum passed twelve years ago...i'm also not sure how my df will take it but I want my child to be able to have a granny iyswim