My dd, who is 3 and a half, has developed a total neurosis about my friend and her two daughters who are 2 and 3 months.
Its becoming a real problem. Almost every time we see them (which is a fair amount as they live locally) she kicks off and starts screaming that she doesn't want to play with the older daughter, it inevitably upsets my friend's kids and on two recent occasions we've had to cut social events short because of it. I can tell my friend (who is sleep deprived and finding things quite difficult anyway) is running out of patience with this, though she tries to hide this.
DD is an only, and is at nursery all week, if that's at all relevant, and used to be quite shy but has really come out of her shell recently. She doesn't do this with any other kids. There's no way anything traumatic or untoward could have happened around this family either, I have known the mum for 30 years and she is utterly trustworthy, ditto the dad (who is also not around that much), I have always been present when we see them and the little girl is very mild-mannered.
Any suggestions? I'm upset because I feel my friend thinks I ought to have handled it by now and because its making it hard for me to spend time with her. And is this normal or should I be worried?