If it is true that the van Dams did live out a wild swinging lifestyle, that they may have also developed the means to safely carry out this lifestyle at home, with kids underfoot. My hypothesis in this case would be that the van Dam kids were given sleeping powders on a regular basis. Enough to knock them out for 12 hours on a reliable basis. Put the child to bed after lacing their water cup. Then there would be no need to check on them for 11 or 12 hours, as experience would have shown.
Now enter Westerfield. Perhaps he had knowledge of this "medication" and knew he could have his way without the child protesting. But what if the child didn't get her full dose, or was overdosed by the father? Would the parents ever admit that they medicated their child in this manner?
More grist for the defense's mill.
Come clean, van Dams.
I deny her death was willed by whoever interfered in her life.
Back to the sleeping pills, depending upon what was used, it is highly variable and unpredictable depending upon child's health (any colds or bronchitis?), diet, temperature of room, how tired she was, a HUNDRED things--as to just how many of a sleeping pill might be lethal, or might with pressure of an adult male on top of her be lethal. An amount that previously seemed right might just happen to have put her out of our vale of sin that night.
A friend of mine years ago, who was in his forties at the time and was being medicated for severe pain, just found it took more and more to have any effect...and got to looking forward to Fri nites so he could take more, enough to really sleep etc without impairing job performance next day...A few weeks later one Fri nite--you guessed it, asleep for ever.
Danielle case seems like a Friday night to me!
Somewhere, I heard one of the van Dams say that Danielle was a heavy sleeper and most likely thought it was her father carrying her, instead of the perp.
OTOH that the van Dams also said that Danielle "sleep-walked"...
These people had an answer to most everything, except the "swinging" question. I'm sure their PR team would have advised them to come clean on that, if they WERE...but they're not!
sw