Without reading any background, and off the top of my head, her age is no guarantee of anything. My husband died when he was 43, my father died at 39. My friend's wife is dying at age 50. All of them had children who were young teens at the time.
My mother's family lives active lives through their 90s. My mother is 64, and I'm pretty sure she could still kick my rear if I needed it. Well, ok, I often need it but I live far away so she can't reach me. LOL.
Then there are young parents who don't have the patience or endurance to raise children. Plop them in front of tvs and ignore them half the day, or don't put the energy into them.
My point is that it could go either way. Without knowing her, I can't make a judgment call on it.