Do you know why the one Flesh girl turned into the dog monster thing? They didn't really explain that.
I think it was just her letting "the flesh" take over her human part. They showed in both episodes that the rebel flesh kinda fluctuated between "flesh" and human and could kinda control it. It seemed that rage sorta allowed the "rebel flesh" to take over. I don't think it was that far fetched tbh. The first part of the episode she was freaking out and showed the flesh had some kinds of superhuman abilities.