Seems that the daughter GS attends <modsnip> School. I found her linked in page and also a FB group that I mentioned earlier. Upon further inspection of those in the group, most were from Phoenix and many also listed <modsnip> School as the school they were attending. So was she living with the father in AZ, possibly that is the reason she was with Rebecca at the Coronado home? Questions I have are why all of a sudden is she back in SC, if that's true. And where was the brother during this time??
ETA: GS is going to be a sophomore in HS, that would be older than 14, no?