I'm sorry you are struggling so badly with that right now. As glok asked, is there anything you can pinpoint contributing to your frustration levels? I recently figured out all sedatives and psychotropic meds make me very angry/volatile. I also know I am more that way even off meds when I am stressed by things in life (finances, feeling alone, increased depression, moods of those around me)...
I have found when that happens, it helps if I try to regulate my sleep, and to be able lessen the stress. Is there anyone that can help you with your daughter, especially when you are more stressed? Is there anythign you can do to help yourself relax and take care of you?