Just a few things:
All 5 cell phones in my family are in my name, I opened and paid for the Verizon Wireless account. So is that one potential reason why reports are the phone belonged to the mom? Maybe the cell accounts are in her name, but her husband or Jayme may also have had phones.
I guess I am still fixated on the report of Mrs. Closs barricading herself in the bathroom (I know, we don't know this for certain) however, perhaps she did that knowing the intruder was after something else, not her child? I did go look at the Douglas Garland case - he had a grudge against the grandfather, but harmed his wife and grandson. If it's at all possible whoever came to the house was recognizable by the dad and was work related, maybe Mom, never dreaming they'd harm Jayme, went into the bathroom to call 911. Of course this is only speculation on my part.