I'm currently doing some heavy research on this Doe's case. Her case, is more or less the pilot for my webseries. Very fascinating, especially considering that she was found completely intact, within days of having been killed, and yet in a heavily populated, but small state such as CT, we have no credible clues.
I went to the cemetery were she currently rests, and damn is that place in complete shambles, couldn't even find any unmarked graves, because most of the small graves were buried under large amounts of heavy dirt and grass. Would love to see more closure for her.
I don't believe she was apart of the series of abductions in Vernon during the early 70s, and I don't think she is Debra Spickler.
My best guess would be Dorothy Madden:
http://www.charleyproject.org/cases/m/madden_dorothy.html
Age, height, weight, look, the relative time between when she disappeared to the discovery of the Jane Doe all seemingly check out. My only question here is why would her killer (who most likely new the victim well) drive all the way from Ohio to Connecticut to discard her in a completely haphazard careless matter, a good 10 hour drive away.