You know, there's a very easy way to get this over with if Pie wanted to. If she really is a girl, simply tell her to take a picture exactly as we specify. Depending on the complexity, it's highly unlikely that (if Pie is a he) would be able to get his sister to be in the shot for him, at least not without some bribery (unless his sister was just very complient). Not foolproof, but pretty convincing. It's pointless to go back and forth with the information we currently have and will be able to glean online. There's simply no way to actually prove who uses the account anyway. Regardless of whether or not she and her brother (or vice versa) are in cahoots or have an agreement, y'all are just wasting your time. We know there's a Carlota, we know there's a Mateo - but we don't and probably never will know which one uses the Pie Crust account.
Oh, and on the subject of emails being shared between siblings? Don't discount that as being a ridiculous assumption. My siblings and I shared an email for a while.
