Boys can just be left alone on their own playing.
While, my girl, most of the time, always needs someone to interact with. Unfortunately, boys do not like much meg’s trip. Thus, meg has not much choice but to give in to the boys’ trip.
So if you have a girl, you might want to give her another sister so she can have someone to interact with, or else you have to be always the customer of her pretend restaurant, or pretend to be her student, or her daughter, or whatever floats in girl’s mind.