Given that she was almost certainly killed by someone from this trailer park(likely at the trailer park), and it's in a small town, it is rather surprising that this has never been solved, or at least that a suspect has never been identified, as far as is known, even though proving it could be tough. I guess no one living in the trailer park remembered her(or someone like her even if they didn't recall her specifically) at that time going door to door selling magazine subscriptions? And no one remembered anything seeming unusual on a August day at this trailer park? Perhaps other residents living there who might have remembered something and spoken up were scared to, knowing a killer was likely living here. I would assume anyone living there with a criminal background that indicated they might do this type of thing was looked at? Of course even serial killers often don't have more than a traffic ticket on their record.
She wasn't reported missing until November of 2003, I have read. While that gives a bit of time for people's memories to fade or people to move out(or even die), it's not much time. Perhaps if she had been reported missing as soon as possible by the company she worked for, this would have been more easily solved. But probably not. While the company could have reported her missing sooner, that they reported her missing at all is good, given the reputation these kinds of traveling magazine crews have, and the likelihood that such workers aren't reported missing sometimes- even if their death has nothing to do with anyone with the crew.
I don't know if it happens very often that these workers on traveling magazine crews don't show up at a designated pick up point. One would think it's very rare/never happens but then again, some workers might take it as a chance to make a bid for freedom if the company they work for is exploiting them. I wonder if the killer who took this young woman's life still lives in that now renamed mobile home park or if he's since moved on. Of course, it's possible it was someone just driving through there or someone who saw her waiting to be picked up by the magazine crew, if she DID get to the pick up point(perhaps she finished early- people in mobile home parks wouldn't be always be the type to be able to afford overpriced magazine subscriptions), but that's unlikely. What is much more likely is that she knocked on the wrong person's door.