When the article published in January 2020, she was 61, overweight, short hair, and had a weird personality. There's not much demand for that, even among 61-70 year old men.
I doubt she was a great catch at age 42 in January 2001. She had a 14 year old son then, so she'd have been a single mom. From the linked article....
"Michael took his last breath on Dec. 21,1998, and since then I have had short-term relationships, lovers and friends with benefits. I have not been in a committed relationship since my husband died nearly 21 years ago. I call myself “incidentally poly,” "
Chateau Heartiste many years ago coined a phrase "insol" for women. Insol is involuntary solitude. There are more and more insol women out there. Insol women are getting sex regularly and even have a good social circle. They just can't get commitment. Being an insol woman is not as bad as being an incel man because an insol woman is getting her base sexual needs met. This is an insol woman.
A female incel (woman who is unable to get laid) does not exist up until age 50. Beyond age 50, it is more likely to exist, but still rare. If the woman you deal with are under 50, you're not going to see this. The woman in question started as an insol in her 40s and it has persisted into her 60s. Even beyond menopause, this woman has been able to get laid.
While the male incel typically has poor social skills and is a social reject, the female insol has at least adequate social skills. She typically has a few female friends. She has semi regular sex at a minimum. She gets some relationships with men, but they are typically 6 months or less. She doesn't get long term commitment. She has a high notch count and is known as a carousel rider. This describes the woman in the article perfectly.
This woman will not find a long term, committed relationship in her lifetime.