Stumbled onto this case and thought Id have a look at matches too
in Louisiana I found this girl
Lee Kratzer
http://www.charleyproject.org/cases/k/kratzer_lee.html
the dates are far apart like by a few years, but also says a year after she went missing she called her family and then disappeared again, so Im assuming running away or hitchhiking were a thing for her, so she could have been doing that for a while until she was killed.
Long shot but just thought id throw it out there as she looks kinda like the original sketch of the Doe. And she was 20 when she went missing so in the age
another long shot but maybe:
Donna Obanion
http://www.charleyproject.org/cases/o/obanion_donna.html
Only because of the description of shoulder length reddish hair. and she fits the age and went missing about 8 months earlier.
And lastly i checked the states nearby in case and the only close ones i found were
Mary Burnette
http://www.charleyproject.org/cases/b/burnette_mary.html
Maybe too young but would have been 18 at the time the doe died
just purely based on her look and body
And finally
Darla Harper
http://www.charleyproject.org/cases/h/harper_darla.html
Went missing 3 months earlier, has the right look, shoulder length reddish hair
Kinda seems like her ex husband killed her. But she may be too far away, about 5 hours, but you never know how far someone will go to dump a body.
Anyway thats all i came up with!