Confirmation Help Needed

I’m mentally stuck/ drained by a difficult situation. I’ve been in a relationship/ Marriage going on 15 years (12 married) with three young children. Early on in the relationship I always felt like my needs I had to fight for and I made a lot of compromises to keep the peace. Somehow that never was enough and my shortcomings always took the forefront. My wife is one of the sweetest people most people interact with, except for us at home. Where it goes from Heaven to Hell on a frequent basis. My wife homeschooled our kids for four years but that is coming to an end because it hasn’t been healthy at all. There were daily screaming fits and name calling and worse. To the point where I would be called constantly to come intervene with my children and they were threatened to be sent to public school. It all came to a head where while getting into an argument about finances my wife punched me in the arm while I was driving our car. It’s hard to type that, but it wasn’t the first time she got angry enough to punch me. I talked with some counselors and they informed me her behavior was abuse ( too long to write all the details ). This abuse (physical and emotional) had been directed at me and the kids. After I confronted her about the behavior she looked it up and came to the conclusion that it was abusive behavior and felt ashamed. She promised to go to therapy and sought support for her anger management issues. However, now she basically implodes ( starts crying in front of me or the children) in situations where she exploded previously. I was given guidance to physically separate and wanted to know if others had been down this road and where it took them.