Wise men of Reddit, I come asking for your help.

I'm genuinely interested in what the purpose of old woman is.

Let's assume that the granny in question is way past any thoughts of sex. She has some kids, some grandchildren, no husband or a husband who can't get his willy up, some property, a proper job.

What's her MO? Let's assume that she is unhappy and bitter - what could be the reasons?

Any way to point her to a proper purpose in life?

Reason: a relative of mine.

Any thoughts/resources/explanations appreciated.