i imagine that zoe had a decent close knit group of friends she thought the world of. she was super cheerful and positive, even back then. a couple of thoughts (1) they could have been unlikely friends from a young age that survived through their school years and laughed about how seemingly different they were or (2) maybe grew up in the same neighborhood and drifted apart as they got older and fell into different groups of friends - i am sure they would have some amazing stories from when they were little.