Following your lead...
Where in her wanderings do you think the perp could have lured her into a car...if he commited molest/murder somewhere private, where in proximity to dumpsters do you think this would be? Or do you think he put her back into his car and drove to another dumpster? To me, the luring, attacking in another area, murder and dumping all say: It's broad daylight and the clock is ticking and pretty soon people will be all over the place.
#2 Now I am thinking of my earlier post - We know Somer ran ahead and ran off before. Out of many instances, there must have been some routine to it. So where would the perp have snatched and attacked her - near his house (condo)? If he is RSO he's been "ruled out". So is this a person who lives on a route in the after-school walks who people do not suspect is a SO (is unregistered) and again, what would be the common-sense speculation on a timeline, murder, relocation of body to dumpster? This perp would have to be familiar with her running off, been able to lure her into a private area, snatched her (without drawing attention or making noise) and the rest.
Could it be someone in a family (neighbor) she routinely visited? And if so, were the rest of the family gone? Would we assume LE has taken a close look at any unmarried, 20-something and possibly unemployed males who live in the area? Because statistics (FBI) say that this is the median age for child molesters.