She has loads of stuff that she can do - books, craft, building stuff, trains, dolls etc etc but she just seems to moan constantly and doesn't get on and just play as much as she used to a small number of months ago. She has a 1 year old brother and they get on really well but where he will potter about, she wants to be climbing on my head . Is this normal for this stage of development or could it be something else that I need to be seeing someone about?