This is a small rural town. That makes it less likely just because there are fewer strangers. Not that there aren't dangers from known people and family members but that's a risk regardless. It really has nothing to do with walking a mile down a road. This isn't a major road either. The article notes it has a 25mph speed limit.
Compre that to firearm-related deaths, which are in the thousands [2]
One side note for any non-American: you may expect there to be sidewalks on roads. For most roads in the US, this is not the case. There might be a shoulder. There might not. There often won't even be a curb. So you're walking on uneven ground. So you could get hit by a car but this isn't a high speed road.
Common sense should rule here. Like don't the police have better things to do? And the DA? Or DCFS?
[1]: https://www.timesunion.com/news/article/child-abductions-str...
[2]: https://www.kff.org/mental-health/issue-brief/the-impact-of-...