I think the white substance...concrete powder or? would really be worth looking at
as far as encasing her in concrete however....when they do concrete on these large projects I think there is more than one person needed...and I don't think that a whole group conspired to hide her remains...you would need the huge truck to mix the conceret and people there to guide it
frankly that job is probably NOT given to illegal day laborers
I think it is far more likely that she was forced to some half finished apt and raped and killed and he put her body in a construction bag/s and wheelbarrowed her over to a construction dumpster
My guess "he" is back home in Mexico, El Salvador or wherever..
sad to say this may not have any resolution, maybe he will make a deathbed confession to a Padre?? One can only hope that fate/justice has removed him from the equation....Mexico is a dangerous place outside the tourista areas
I don't "feel" that he is in the Orlando area....no other crimes match this
again : I strongly feel it was a construction worker, probably laborer, illegal...saw her, found a time to snatch her...then he got rid of her body in one of the dumpsters
he took back the car...and went off into the void....
It is sad that Jennifer never got the attention or the searches that other cases have recieved
JMO of course