Its a very long shot, but I'll mention it anyway...
Carla Corley went missing in 1980 aged 14. She would have been 34 at the time of Racine Jane Doe's death, but in some places RJD's upper age estimate is 30 or 35.
She had been abducted and gang raped a month prior to her disappearance, and the men had been looking for Carla in the days leading up to her disappearance. In all likelihood they probably murdered her, but its possible that they might have kept her as a sex slave or passed her onto someone else who did.
I think the appearance is similar, and the hair and eye colour match perfectly. Carla also had brain damage that meant she had epilepsy. Carla was only 5 foot 3, but this height might have been an estimate and she could also have grown a bit more, given that she was still 14.
If the cauliflower ear was an acquired deformity, then Racine Jane Doe would have to have been abused for a long period of time, which would be the case if she was Carla. I know that the torture was for about four weeks before death, but that doesn't mean that RJD wasn't in an abusive situation before that.
Carla has both DNA and dentals in NAMUS, which means she 'should' be automatically flagged as a match if she is, but I never quite trust DNA automatic matches, due to the fact that we can't see what type of DNA is available. As for the dentals - could those be affected by the time gap? If there was a long period (19 years) of poor dental hygiene, then decay would have set in. RJD did have bad teeth.
http://www.charleyproject.org/cases/c/corley_carla.html
As I said already - its a long shot, but I'd be interested in what you all think.