It's curious that they found duct tape at the barn with both of their DNA on it. Why would he bring that home?
We don't know that he didn't bring her there for those few hours and then bring her body back to where she was found do we?
I think it went down sort of like this:
At 6:45 p.m.--7:00 P.M.--- Lucifer pulls up on his bike and manages to cut Ce off, causing her to halt where she was, possibly feigning a mech. problem.
7:00--9:00 ---According to police, Lucifer remained right there in that cornfield for almost two hours, we have to assume he was holding Sierah against her will and restraining her in some fashion. There's also the chance that she may have been unconscious during a good majority of that time. To remain right there in the close proximity to the house she was biking towards for two hours is
total insanity........but it is what it is. What that tells me more than anything is that he had no idea where it was that she was heading to.
9:00-- ? After dark, Lucifer manages to position Ce on the front of the motorcycle seat, and drives home. Who knows if she was conscious or not, but after a blow to the head and death threats for two hours, she complied.....or didn't. A guy his size could easily manhandle a small woman onto a motorcycle and ride home in the dark, and to a passing motorist, it would simply appear as two people riding double on a bike. He only had to ride for 5 miles, less than 10 minutes, to get to his home from the abduction site. Plus, it was dark by then anyway.
10:45 P.M.----Ce's relatives realize she is missing and call 911 to report it.
Somewhere in that scenario, Lucifer got bruised up pretty good, so we have to assume that Ce became conscious and aware enough to inflict a decent amount of damage to his arms and legs. I think he took her back to his house for sure, but only after bundling her up to make it look as though she was a willing passenger on his bike. A simple ski mask could have camouflaged the actual process of restraining her from prying eyes. I'm sure the duct tape was used right at the beginning of the attack to prevent her from yelling for help.
What Worley failed to anticipate was the huge search effort and the onslaught of law enforcement agents that flooded the area the next morning. Most likely in his previous abductions, that kind of intense effort to find the missing person was lacking. He had to know that it was simply a matter of time before LE knocked on his door, especially with his previous conviction for a similar crime. How he managed to escape that kind of intense scrutiny in other missing persons cases or murders is yet to be determined.
Because the heat was turned up so high this time around, he felt as if he had no choice but to rid himself of his captive, so he took her yet another 2 miles further away from the abduction site and buried her. Fortunately, he must have toted his cellphone along with him, making a search of the area easier to focus in on. I think this was a desperation move due to both the intense LE presence flooding the area as well as the citizen involvement. In his prior abductions, for whatever reason, he may not have felt so compelled to distance himself from his victim so quickly.
That is more than 10 days. 
