So initial reports were that officers responded to the Closs house 4 minutes after the *end* of the 911 call, but articles that have come out within the last 12 hours say that officers arrived on the scene 4 minutes after the call *was placed.* If the shooter/shooters were only in the house for a few minutes, then they did not ransack the house for valuables. I think it's a given that they killed the father first; he's a bigger threat to the bad guy/gal compared to the women or maybe b/c he came to the door first after he heard the door being shot -?. Mom stayed in the back of the house (where she was found, correct?) while her husband checked out the commotion. Shooters entered, killed Dad, found Mom. Since we now know that Jayme was in the house, then maybe she hid but was eventually found and taken. I discount the idea that she ran outside and escaped once the shooter/s left, as, once she realized that the police had shown up at her house, she would have most likely gone back. All conjecture, I know, but we have to look at human behavior. If she fled during the attack, which I don't see as being likely, and managed to fully escape, then police would have located her by now.
There was a family function earlier in the day. Did something happen there that caused discord between the shooter/s and the Closs'? I'm sure that FBI/Sheriff have interviewed them.
Otherwise, why would someone do this. If house wasn't ransacked, then the idea of a meth addict going to the house in search of money doesn't make sense. And why would they take Jayme but kill her parents. It doesn't fit that an addict searching for $$ would think of kidnapping her after killing her folks.
As another poster mentioned, my guess is that one of the parents or Jayme called 911. But possibly they dropped the phone in an effort to protect one another during the melee. Think about it, if that happened to you. If I saw a family member being attacked and the phone was in my hand, I'd physically do what I could to protect them, with the phone being my last concern. As long as the call went through, I'd hope that the 911 operator could figure out what was happening through the audio.
My guess is that whomever did this was acquainted in some way with either all three of the family members or at least one, with that one being Jayme as she is the one who (it is presumed) to still be alive. Someone with a fixation on her.