A psychologically ill wife who curses a lot

Q: I have a wife who gave birth to four children; the eldest is six years old and the youngest is a baby, and now she is pregnant. She is inflicted with a nerve illness and foolishness and has become rude to the extent that she curses me, my parents, and my children. I commanded her to observe Sawm (Fast) for three days, pay Sadaqah (voluntary charity), and make Tawbah (repentance to Allah). I also abandoned her in bed, but she has not stopped this bad habit. Whenever she gets sick, she curses. She does not feel that she is committing a sin regardless of the advice and guidance I offer her. I suffer a lot with her and endure her for the sake of my children. However, I am (Part No. 19; Page No. 247) no longer able to bear her. Could you kindly advise me. What should I do with her in this adversity?

A: We advise you and your children to treat her kindly; do not be bad with her or irritate her, advise her wisely with good manners, meet her bad sayings with good ones, explain to her that cursing is one of the major sins and that its evil will return against the curser if the cursed does not deserve it. May Allah guide her to give up cursing and other misdeeds. May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.