so I will start by saying I do really love my mil and have been with her son for 8 years, we have a good relationship. however, when my kids go to stay for the past year she never ever brushes their teeth it has got to the point my 4 year old daughter always says everytime she goes in the door gran u need to brush my teeth. I have bought them toothbrushes for when they are down there and toothpaste and still she never does it. They stayed yesterday and when I went down today on way home my son said all he had to eat all day was chocolate buttons and crisps, first thing hes got when hes got up was chocolate buttons!. this was at 4 o'clock!! I'm so annoyed. I know they eat chocolate more than usual when they are there, my daughter was also sick during the night never sick when home because of the chocolate she has ate and hasnt even had her teeth brushed inbetween! what should I do?