Question about Janet and Sheriff (possible spoilers)

I have a theory, that is, admittedly, far-fetched. Based on the background provided by Dobbs to the Sheriff in the big expository moment, I think that Dobbs may have created (not preserved) his own community based on his envisioning of an old-fashioned seaside New England town.

Consider that Dobbs tells the Sheriff that he gave Janet to him after perfecting her, and that he (Dobbs) found Janet after her car accident. He describes her bloated condition. Why would Dobbs tell the Sheriff that Janet was a gift to him, if the Sheriff and Janet were already married? How would the Sheriff, or anyone else, not have stumbled across Janet's accident? Based on Dobbs' statement that she had been rotting in the water for awhile, she obviously would have been missing and given the small size of the town and the fact that her husband was the Sheriff, it would seem likely that someone other than Dobbs would have come across her. It's possible that Janet was just passing through town like the hitch-hiker or photographer.

Also, the video shown of the Sheriff and Janet seemed similar to the first set up, when the blond nurse entrapped the photographer. The video, I believe, was shot at a rundown home, and not the house we saw the Sheriff and Janet "living" in. Perhaps the Sheriff was just a passerby, or someone who used to live in the town who had returned. Based on Dobbs' re-engineering of George into Freddie, it's plausible that the entire town was not preserved, but actually engineered by Dobbs into Potters Bluff.

This background suggests that the Sheriff and Janet might not have even been married or known each other in their pre-Potters Bluff days. Did Dobbs create relationships among random undead townspeople or outsiders converted to undead townspeople and give them false memories? Again, this seems far-fetched I know. Maybe I'm reading too much into Dobb's grand revelation.

Regardless, I enjoyed this film quite a bit even though I thought the gore was excessive.