All I can say is I had my first child when I was much younger 24, and I sure as heck know the difference in my energy levels, level of tolerance etc, and my health was in far better shape then as well.

It is all very well to say that she gave that child the most precious thing LIFE itself, but the quality of life is what is important I think. JMO, I cannot imagine she will be any different to any other 67 year old, she just won't have the energy simple as that, unless she has a lot of extra help., still sticking to my guns, it is selfish.