Here is the NamUs thread for this set of unidentified remains:
https://www.identifyus.org/en/cases/4842
This is on a very short list of possibilities that I found while sifting through UPs along a cross country route. DNA is available for this UP, so once Denise's DNA profile is complete, hopefully we'll know, one way or the other.
Are the Indiana and Oklahoma Jane Does the only ones on your shortlist of possibilities?