We are having My Dad and his wife round this Sunday for DS birthday. But with it being Mother's Day I feel obliged to get something from the Grandchildren for their Gran, my Step-mother. She is a good Gran, but was a rubbish step-mother. So I'm really on the fence. We are a bit skint this month so can't really afford anything to be honest. But at the same time I wouldn't want her to feel hurt. Do other Grans get Mother's Day cards and gifts for being Grans?