My CM is generally wonderful - both kids and dh and I are so happy to have her BUT her behaviour is really starting to grate. Please give me your thoughts wise MNers. CM is very dogmatic, it's always her way but as the kids adore her we've generally let things ok unless it is a big deal. We've had her for 4 years. She recently informed us that she will have to leave 30 mins before agreed pick up time twice a week as she has a family commitment. Her DH is there with the kids but wont' do the family commitment (don't want to give away too much here!) Our little dd recently started her free nursery place 5 mornings a week, CM wanted us to pay for DD to stay an extra hour at the nursery - which we would pay for as well as paying her. We've bargained her down 
to paying her exactly the same money as she would be getting if she had dd fulltime. She rang today to say she is sending dd to nursery for the extra hour tomorrow as she might be minding another child. I said that we hadn't agreed this , we had agreed until lunchtime at the nursery. CM said the price of petrol to pick up DD was "killing her" - CM lives 1.5 miles away from nursery. I said that another person's arrangements were her concern but that dd would be attending only until lunchtime tomorrow.She minds our little ds and older dd also, Dd is in school so she has her after school and our ds fulltime. DH wants to move the children, and I feel she is behaving like a Diva. Please give me an objective view. 