Catholic nerd hat on: I have a bit of a quibble with the idea that the marriage covenant is broken by abuse. I do fully agree with the statement that nobody is ever obliged to stay with an abuser.
However, the marriage covenant is formed at the wedding itself. You are promising to love and honor your spouse all the days of your life. If you do not actually intend to do so, if you are psychologically incapable of doing that, if you have no clue what love actually means and you think it means control and abuse and putting yourself first and the spouse exists to serve YOU, even if you hid it well, those vows mean squat and you are incapable of actually being married. So there is in fact no marriage covenant made, because God knows if there’s the capacity there or not. It would be the same as a wedding of two children. They might say the words and think they mean them, but it could never be a real marriage.
Falling short of those vows is only human. I haven’t been a perfect wife on that loving and honoring forever clause. But I believe both of us undertook the marriage in good faith.
This is what the annulment process is for. To determine if there ever was a real marriage there. Most of the time there is not. In cases of abuse, it’s usually an open and shut thing. An abusive person doesn’t suddenly become that way after the wedding. There was a problem there all along.