Are the women manning the radar screens, while the men fly the jets and refuel the rockets?
A bit like the women manning the word processors and accounting systems while the men install the engine in the chassis, etc?
A lot of occupations became extraordinarily female-dominant once all the suitable men were sent off as canon fodder. But I guess the stress of having to identify blips and blops on a screen is similar to seeing your mate's head blown off right in front of you. (I really don't know: I've done neither.)
PS your little bit of science failed to control for testosterone, which is shown (by science) to reduce one's lifespan. Science seems to think men produce more testosterone that women. So your 80 year old heroine was always going to outlive (on average) your dear old pa (on average).