Email and ip location. She has actually changed the registered email now to something that turns up no hits on google, which I think adds to the proof it's her.Was she exceptional enough to register with her normal email or how did you figure that out?
ETA: the original email led me to this youtube account: https://www.youtube.com/channel/UChnderwk3k32FCntHNwYriA
Oh lol I'm a dumb bitch and can't read Okay maybe it's Andrew, the dad. It's some crazy in their family.