Tell your wife that she must agree to marriage counseling or you are leaving. Then, if she refuses, take the kids and go. Find childcare for them. Make HER sue you to get them back. Document the abuse- date, time, what happened. Keep a record of it. If she won't get help, don't let your kids endure this w/ her. If you leave w/ the kids, it may shock her into getting help. Just my thoughts.