I may be being completely unreasonable in being so annoyed by this and this is the best place I can think of to find out....
DM keeps doing it despite me having asked her not to so maybe its just a normal thing and I'm overreacting? They are only small and are generally good kids so it's not serious bad behaviour or anything dangerous, just little things. For example, table manners or oldest DD mucking about in the front garden when she needs to come into the house or them winding each other up. I'll be saying something like "stop doing that" or "please use your knife and fork" or whatever and she'll start saying it as well but more impatiently. The odd occasion I could live with but its every time when she's around.
Is this normal grandmotherly behaviour? Do I just need to get over it?