I get rather *** off(though not with you emmie) when it gets near Mother's Day.Why,well both I and my OH have no living parents,but we get bombarded with suggestions of what to buy.As we have no children the suggestions can't work in reverse.Indeed I lost both my parents at the same time(in 1974,I was 27) in a car crash.So being reminded forcibly of the day brings back sad memories.Of course it doesn't matter as long as people buy things, far too commercialised in my opinion.
If you have time and the resources make her a photobook of family members with their names under their photo. I have two relatives with dementia and they love their albums.