Children don't react like this for nothing. There is something bothering her and it is just a matter of finding out what. I hate to ask this but is there a possible chance that someone (possibly adult) might have done something that has unsettled her. I know that somebody I know had the same sort of thing, took her child out of school because it got so bad and then some years later it all came out about what her very trusted, respectable family member had done to her. The police were called and it has opened up a whole can of worms about children he has been in contact with. You think it won't ever happen to you and yours but, sadly, it does.
Of course, it doesn't have to be as bad as anything like that and it could be a realisation that people die or get sick so she is having trouble getting her head round the fact that it is unlikely her Mum will. Very bright children often struggle with these kind of thoughts.
COUNTRY, CITY, AREA, PLACE -Game 21
Last weekend, in Rutland, the first statue in Britain of the late Elizabeth II was unveiled.