oh, perfect, we can say that the whole clan was adopted/fostered too. charlie is super close to her dad and his side of the family, just because she has always felt so much more connected to them than to her mom's side - despite the fact that she spent 9 years living on the West Coast after her dad went to jail. we can say that her dad was adopted/fostered as well and they have this large chosen family. so her and nate could be related-not related through all of that in some weird way that they didn't know about until they like met when they were moving in together or something like that. so rhett will eventually be accidentally called uncle dad over cv.