TRY TO PUT YOURSELF IN HER SHOES
What is her problem? Is she jealous? Is she sick? Is she bipolar? Is she on drugs? All of the above? Recognizing that this woman may have “issues,” that she may have some legitimate gripes with your husband—her ex—may make it easier for you to handle her venom. Either that, or accept that she really is in need of psychological help, and there’s nothing you can do to change that. She is suffering more than you.