Is there any chance this is connected to the red headed murders that were happening around this time frame? October 1978 is listed as the start of the red headed murders and with the confusion from her being listed as not brown haired initially I wonder if she has hair similar to my own -- I say brown, but it has a tinge of red in it and in the summer months into early fall does appear to be more red/light brown than the brown/black it will be in late fall, winter, early spring. She falls into the very broad age range of what the redhead murdered killed. Hillsboro Road was a main road and I believe that it is suspected this SK was a long road trucker.
Do we know how long it took for a missing person's report to be filed? Sure Franklin was small back then, but the Sheriff's Department is in the one that had this case, not the city police...
Also with the population boom, many areas that would have been woods during the time she went missing, would have been disturbed by now, especially this area. It makes me think she was taken out of the area or dumped into the Harpeth River or Cumberland River. Sadly, she wouldn't be the first person they found in either of those.