I married my late wife's Sister

I'm Gordan 36 have two children to my late wife Joanne, she died four years ago in a car accident. She worked in child welfare and was at work, when a drunk driver in a pickup ran a red light smashing into her work car, killing her and injuring her partner. She was 31 at the time. Her sister Jane 28 at the time moved in with me and the children to take of us as we were all devastated and she help us over our loss. I had always thought Jane was quiet person who never seemed to be going out or interested in anything except her work as a painter and art teacher. But she help the children cope with the loss of there mother and enabled me to get along with my life. Nearly two years later due to cutbacks the art lessons were dropped at the school Jane worked at and she became unemployed. She started to look for work and I also started to pay her for looking after my house and children. She didn't want any money, but I insisted as she was paying off her car. I could afford it being a lawyer, also when both the children went off to summer camp. We were home alone and on her birthday I took her out to dinner to celebrate. We had a great time together and that was the start of us going out as a couple. It was nearly three months later that we slept together for the first time and then she started to sleep with me every night. Last year I ask Jane to marry and she accepted and we married in November, she is now pregnant with our first child. We know it's a girl, my first and we intend to call her Joanne when she arrives in August.