This is the only theory that makes sense to me as well. Although, I missed where police said it was premeditated. When was this?
"Police say Sarentzky’s actions were premeditated."
http://www.greenvillegazette.com/th...at-really-happened-to-this-toddler-i-am-sick/
"Hailey's body has been found Tuesday evening in a rural area nearby her home. Derek Saretzky, 22 year old, has been charge with premeditated murder against Hailey Dunbar-Blanchette and Terry Blanchette and with indignity to a dead human body."
http://imgur.com/gallery/4xqLd