I’m having sex with an elderly woman to get on her will

I’m a tradesman in my late 30’s. I work in several trades. A year ago I did a big job for a 75 year old widow out in the country. Her husband passed about ten years. She has no relatives whatsoever. She lives on about 400 acres of land, and she’s probably worth millions. She kept calling me to come do this or that for her, and I sensed it was because she enjoyed the company. It didn’t take long to realize she had a dirty mind and a dirty sense of humor. Sometimes she joked about needing to go find a young man to bring home. Her dirty jokes started to include me. I decided to take a swing, and it worked. Now we’ve been having sex regularly for the last 6 months. I’m married. I have two kids, and no one knows that I’m doing this. My hope is that she will leave me an inheritance that I can use to take care of my family.