I have managed to avoid Wendy.
I recall reading something like this early on but as it wasn’t charged..I discounted it.
I think that the Wendy assertions bring an element that I feel is truly believable of a psycho like Casey.... she just may have been prostituting her child. Her readiness to throw her whole family under the bus is supportive of believing she was throwing her little girl under the bus as well. She needed money and pimping her child would be nothing to a woman like this. Never really know what truly happened, but I do believe the little girl was most likely sexually used and the killing of her was a cover up of something even more sinister than the case presented.