Sometimes people look at statistics and draw the wrong conclusions. If there is high infant mortality, and high mortality in childbirth, the average life expectancy of females goes way down. It is mistaken, however, to conclude that a woman who had survived these perils would soon die just because she had exceeded the mean average lifespan.
I'm having difficulty understanding how people have so much riding on the idea that women must have lived longer than 28 or 30. Some did, but it wasn't typical.
In the Odyssey, the hero finally returns from the ten year Trojan War, but only ten years after the others had; his wife was alive and well, and had a bunch of Mycenaean ne'er do wells trying to drill her. She was from the aristocracy, and historically the aristocracy generally have an easier time of it and longer lifespans.
I don't buy the idea that Helen of Troy was some sort of shaved-head dominatrix. That sounds like some sort of cryptofeminist anachronism. Spartan women during the classical Greek period did indeed have their heads shaved in a rite of passage involving marriage.
Classical Spartan society was separated by gender, and the boys were all sodomized compulsorily from a young age. When it came time to marry (which was also expected by the society), the bride was shaved, dressed in a boy's cloak, and left in a dark room; the husband arrived, did his deed, and then returned to sleep with the rest of the men.
According to the Spartans themselves, that weirdo fetishistic society arose *after* the overthrow of the descendants of Menelaus.