Esther Beras She is kinda depressed because the children there don't like her and she wants to go back to earth (in the story, it saids that her parents are trying to go back. ) The children in Venus don't treat her nice, HoPe this help♡.
Orinoco Womble (tidy bag and all) She is an outsider who has lived differently to her classmates. They don't have her experiences so they call her a liar. Nobody likes that. Bradbury often writes about isolation and lack of communication.