The thing is, as far as I know, nothing has changed. No moving, no new baby, no divorce or deaths or sickness with family or friends. The only thing I've really noticed began with mom starting this drop off nonsense at the door with saying things like 'I'm so, so sad to leave you all day! I will miss you so much'. She actually seems pleased when the kid is upset that she's leaving. I get the impression that she wants to feel that her daughter needs her. I think she maybe realized how quickly the kid is growing and that she's always been quite independent and felt left behind? And began this babying and now the child has grown to expect it.