Might have misread your post fella, but me and CI are not saying they are, were just saying they're shite/irresponsible parents.
On the other hand, stranger things have happened than parents murdering their child, im not saying they did and i dont believe they did and looking at the evidence available, she was abducted...i'm just saying that its not impossible that they were involved.
Just to clarify, i dont think they were.