There are many divorced ladies in their 40's who are rejected by Chinese suitors because they are too old, or may have a daughter.
Your age is not a barrier for them and if you can adapt to Chinese culture they will provide you with a very fullfilling life.
Datein Asia Features Thai Friendly is my go-to website to meet Thai women, especially ones in Bangkok.
They should make some improvements and attract a wider variety of Asian girls (again, it’s mostly Filipinas).
Hopefully, she earns a reasonable living to pay for the service.
While there are some legitimate dating sites it is illegal in China for the agency to broker a marriage to a foreigner.
Since I wrote my original post, I found the agency's website that is representing her. They are charge her a translation fee every time I send an e-mail.
I wrote back and told them what I had discovered, and I wouldn't be writing until I was ready to visit her. I know their wages are low, but she is an engineer.