No, you will both suffer. People can realise the error of their ways eventually. Wouldn't it be great if the old adage all is well that ends well, applies. What is there to lose by always allowing a door that s shut with the possibilty of it being opened. This is being human; The rewards can be endless.
While there is always the possibility of someone repenting and changing their ways, in most of the situations the hitter only gets more and more violent, and women (and men) have been severly injured or even died because they kept giving the "repentant" hitter one more chance until it became too late...
In these cases, if the hitter says sorry, they're often sincerely repentant at the moment, but whatever in their psyche is broken enough to let them hit a loved one a first time tends to activate again.
There are other good reasons where you need to let go, acknowledge that the person is who they are and that won't change, and get out for your own safety, health or well-being; but violence is one of the clearest examples.