Let me respond by telling you that I know exactly how you feel and before you say there is no way...trust me, I know.
I got pregnant at 19 and had my son at 20 - father did not want to get married. I then married an Air Force guy after 5 months of knowing him.

He left for Vietnam six weeks after we married. I did not know him and found out that he was a violent man after a couple of years upon his return from the service. We had two more sons and after 15 years of being hit and hurt and just horrible things I found the strength to divorce him.

I then married a younger man who was unfaithful and after 15 years with him, I divorced him.

After many years the father of my first son came back into my life and we have been married for many, many years and happy as two people can be.

Why am I telling you this? Because as bad as things may seem now, GOD has a way of steering you in the right direction.

From your story and having gone through my divorces I have to tell you that as happy as you were in the beginning, the signs you have told us indicate that this woman has found someone else.

Her screaming at the children indicate to me that she is struggling herself.

Sometime shame and fear can cause the anger to occur.

I know that for me and what I went through with both of my husbands, they were angry, violent, and destructive. GOD brought me through those horrible years.

I don't know how old you are but it took me 15 years for my first marriage and 15 years for my second marriage.

And now I have made it 22 years with the man I should have married in 1964. GOD knew it would not work back then and HE wanted me to have my two other sons. Both of which are angels.

I wish you the best and pray for you, but although I am not a Doctor, my human suggestion would be to "let her go" and give GOD a chance to turn your life around.

If you want to discuss further, please feel free to DM me. Aumone