4 Yr Old DD doesn't want to come home from school

[mayroad]

Help

My DD has just started school and all is going well. However, when I go to pick her up, she never wants to come home, and always asks which of her friends houses we can go round to. Once or twice she has had a bit of a tantrum when I tell her that we are not going to anyones ! This makes me feel like a useless mum as she obviously doesn't want to come home with me and her baby brother ! It's also very embarrassing as no other child in her class behaves this way !
Apart from this she is a lovely child - very caring and kind - sleeps and eats well and generally behaves herself !

Help - am I doing something wrong !!