Does anyone remember the title of the book in which the H thinks that the h is cheating, and he throws her out, penniless? She end up remarrying, and her second husband dies. She had always wanted a child, so she did IVF, thinking that it was her second husband’s sperm, but it actually was her first husband’s. When he finds out, he has her kidnapped and treats her pretty cruelly. He may have thought she did the pregnancy on purpose.