We do not know if he had SW. Just because Jake said, he picked her up a day earlier. Or was this his ruse, and he was their, picking her up.
We are only hearing what the Wagner's have said. And something tells me, they might not be the most honest people in the world.
One of them could of been picking her up, and gave the word to come on in, and let the killing begin. And she then could of been taken away.
You have to remember, the people who kill like this do not think like, rational people do. We do not know, but HR could have been held against her will for hours before she was killed. And for them being in their beds, that could of been like their calling card. It is hard to tell who, is texting and this might be some of the electronic, hacking.
I believe the victims was made aware, of who was going to kill them and why.
I always thing of the two idiots, in the Home Alone movie, and the one always leaving the water on. As their calling card.