Because of the strange and brutal nature of the crime, as well as one baby being spared, it can't be ruled out that it was someone they knew or set up by someone known, informed about or familiar with her. There was no forced entry. She didn't appear to have enemies.
Her beliefs, social life, work life, etc all do play into this. That is what makes up the fabric of her life and who comes in and out of it.
Burglarizing a house two doors down on a culdesac - when neighbors are probably aware that the house occupants are out of town -is pretty brazen without a plan. But it is a convenient way to watch for the husband to leave.
I don't understand what is up with the neighbor that heard gunshots and didn't
@) look out and see a stranger walking away shortly after
B) call the police
C) recall seeing an out of place vehicle earlier
D) something?? Are gunshots common in that neighborhood??
It's all just too methodical to be random - but could have just been one tragic coincidence after another.