The call log is interesting. I, too, would like to know if their landline was disconnected previously (as many people no longer have a landline phone at all), or if this was something the perp(s) did.
Reading that they believe the father answered the door but also that the door was kicked in....I am wondering if this was someone known to him/the family. They are angry at him or someone in the house and arrive late at night, pounding on the door and yelling. He knows who this person is, can tell they are irate, and doesn't feel safe opening the door to them. Maybe he even walks near the door to yell at them to go the heck away or he will call police..something like that. Then at that time, the perp kicks in the door and shoots James. This is all MOO of course. I just can't stop thinking this was targeted and that the person was known by the family or at least one of the family members.
I still am unsure why they would take Jayme if they had a vendetta with one or both parents who they murdered, but I guess it could be as simple as, Jayme knows them, she is a liability for them, but they do not want to kill a child, so instead they take off with her.
Also I am curious where the dog was found. Was it in a crate or running loose? I know my dog would be going absolutely nuts, just insane if this was unfolding at my house. But the 911 dispatcher/call log did not mention dog barking on the phone, just yelling.