Maybe she was naked because she was killed in the shower/bath tub. Easy clean-up if clean up is even necessary with no visible trauma.
Yes, excellent point. Easy cleanup of blood (if there were any) as well as any bodily fluids released after death. We don't know COD yet, but "no visible trauma" brings to my mind perhaps suffocation, drowning, or drugging. Perhaps he drugged her morning coffee then drowned her in the tub. If that's the case, it will make prosecution easier -- the autopsy will show water in her lungs, which would point to the murder happening at home. In fact, if they have well water out there on Sheff road (does anyone have that info???), they could even trace the water in her lungs back to the home.
On the other hand, she was probably lying out in the elements for about a week before the colder weather and snow came in (which would then have preserved her pretty well until she was found). During that week, the weather was in the 40's, so not a lot of decomp, but maybe some -- maybe enough to obscure bruising.
So, perhaps "no visible trauma" might mean nothing blatantly obvious like a gunshot wound or stabbing. But it might not necessarily preclude blunt force trauma.
Blood was found in the van. We don't know how much or where. If I were going to be moving a body, I would wrap it up in something like a shower curtain or tarp and then duct tape it to prevent blood (if any) or bodily fluids from leaking out, and also to hide the body. (I wonder if LE could check on the purchase of something like a tarp or shower curtain in the weeks before she disappeared?)
If there were something wrapped around her body on the way to Center Road, then that had to be discarded somewhere. Most likely on the route between Center Road and Plank Road Manor. If I were LE I'd be checking along that route with cadaver dogs, and checking out ponds and streams that run close to the road.
Another thing, Jennifer was reported to go missing wearing a blue and purple top and I think jeans. Has LE checked with other family and friends to see if she actually owned a blue and purple top? Has anyone checked her closet to see if it's still hanging up in there? Or checked with recent donations to Goodwill? Look for it along with the tarp/shower curtain.