The playdate by Uje Brandelius

For one little girl, the prospect of a playdate at her friend Henry's house fills her with excitement. To get to Henry's house, they have to take a bus, then the underground, then change to another line, then a bus, and then walk for a bit, but it's worth it because Henry's house has millions of rooms to hide in and hundreds of toys to play with. Yet, while the kids tear around the house enjoying each other's company, their mums experience the playdate very differently. Soon we find that the little girl and her friend Henry live lives that are poles apart...