Sister in Law

My sister-in-law (SIL) 31 widowed no children, my older brother had married her to keep his inheritance from our late grandfather. My brother wasn't ready to marry his words; he just wanted to keep enjoying himself. So, he married Audrey than 29 attractive and very quiet. My brother called her his mouse. He didn't want children anytime soon and being 7 years older than Audrey, only marry her because she ticked all the boxes as they say. Our grandfather passed away in late 2023. Once my brother got his share of the estate, Audrey was rarely seen by him. I then 32 liked Audrey, being single myself and not expected to marry as I was awkward around women according to my late grandfather. Hence the extra pressure on my brother to marry. My brother now released from the gaze of our grandfather went wild. Which ended up in his dying in a single vehicle accident (December 2024) while drunk. Audrey now a widow, very few friends turned to me for support, two reasons I was closest to where she lived and had always treated her well. I at first tried to help her as best I could, but also very attracted to her. In February this year, I'd a meeting interstate planned to fly in early in the morning leave straight after. But a dinner was arranged and not wanting to attend alone as usual asked Audrey to go with me. She agreed, it meant staying overnight. Her surname made others think she was my wife, which I didn't correct. We had a goodtime at the dinner and one thing led to another and we became lovers. I took no precautions and after our return we continued our relationship. She moved in with me at my request. Feeling she was perfect for me we eloped at the end of March and married. She is quite happy being my wife and very happy to be becoming a mother, confirmed as pregnant in July. I thank my late brother for his choice of a wife to fulfil his need at the time. She is the perfect woman for me.