RBBM. This is incorrect. That interview with Aunt Cindy was on Sept 11 and AFTER they found Crystal's body and SM had been arrested/confessed.
Here is the transcript: http://www.cnn.com/TRANSCRIPTS/1709/11/ptab.01.html
Yes I knew but thought the sequence of finding things out was different.
So they first found out their dad was in jail and the next day they were told that their mom passed away.
The older child has probably already connected the dots. I hope they're able to find a good therapist fast.