She said she helped raise Dana's children. That seems pretty close. This interview answers a lot of questions about the dogs, the narrative of the morning's grim discoveries, and so on. It definitely sounds to me as if the people questioned at 3 am were those at the scenes: Bobby Jo, her unnamed friends, her brother and his wife. The image of the dogs sitting outside, apparently calmly, is a compelling one to me. Even if they knew the killers, it seems to me that they might have been upset and become aggressive once the scene became violent. We know from DS's seaport that KR's ?rownie was distressed and aggressive, and maybe that was because his master had been killed and he was confused and upset, rather than because he was always like that. That lends some weight to the theory they could have been drugged - but that must add to the timeline.