WOW!
I don't have a my mother-in-law passed away before we got married so, I don't have these things to worry about. I hate to say this but, this really isn't any of her business. This was a personal decision between you and your husband. With all the troubles you went through I don't blame you at all! My first pregnancy was horrible! I was sick and nearly died having her. My second daughter is lucky she is here because of the horrible time I had with my first. I am divorced and re-married (at the age of 42) a man (when he was 38) who had no children. He knew that is would be detramental to my health to have anymore children. He had a vasectomy when he was 40 yrs old. I feel your mother-in-law is being very selfish. sorry.