Y/n is in a foster home and with a 3 year old girl called myla and they have a really close bond. y/n hates her foster parents because they are really stricked so she practically raised myla.y/n was taken into care when she was 5 years old and is josh's twin but they don't know that until they start hanging out they release. Josh realises y/n is his twin sister after seeing a birth mark on her back when they go swimming. y/n is best friends with jess.