Maybe menopausal becos I went through similar situation, just screaming at my husband and my child over simple matters, but then again my husband never helped me with the house or my child, plus I have a helper! Could she have post natal depression? I went to the doctors after having breathing difficulties every time I had a fit, and I was given hormone pills which really helped me to calm down . You say you help out when you can, but have you actually spoken seriously to her to find out what the problem is and why she is so unhappy?