My theory on the Aunt knowing approx. when the murders occurred is that she was told by LE. Keep in mind that the writer isn't going to put in the story that they asked her where her sister was at the time that the family was murdered.
I updated the blog after I talked to Taron's mother and asked her where she was on Sunday, Monday and yesterday.
Taron's mother, Debra Kost, 36, lives in Buffalo, Missouri, and says that she was at work at Carl's Package Store at the time the murders took place. "I was there on Sunday, Monday and yesterday," adding, "all they have to do is look at the camera's."
FYI.....she has seven other children who range in age from 17 to 2 that she has custody of. Kost says that know one has notified her or any of her family members of her daughters death even after repeated phone calls to law enforcers.
http://crimesceneinvestigations.blogspot.com/2009/06/suspicious-death-investigation-turns.html