The old man who counted names said my name was widow's life, and my mother-in-law was right next to me.

Forget it. It's no use. Your mother-in-law won't believe it after all. It's best to find someone to calculate it in front of her mother-in-law, and then tell her to change her name, or tell her what simple ways can be overcome. The point is how to communicate with my mother-in-law, not how to work out the result. For your happiness, I'd better find someone to do the math for you in front of your mother-in-law, otherwise it will always be a knot in my heart. I did this in Shanxi. Shanxi is one of the ancestors of fortune telling.