To be fair, DC Comics came perilously close to the truth, barring two fundamental facts.
Firstly, Mollie Fancher lived 78 years, not 73. Secondly, she did indeed very little, but that was because she was what was then known as a fasting girl. I can’t find anything to corroborate this business about her having visions, but I’m going to assume it was nonsense. Occam’s Razor, and all that.