If there is no repentance, there is no forgiveness.
Jesus did not tell the woman caught in adultery to keep on going out on one night stands but rather to go out and sin no more.
When someone sins against us we are to forgive them but if they refuse to repent we are to avoid them because they are not sorry for what they did, and they will continue to do it.
Not only that, but the abuse will just get worse.
If we must be in a relationship with them like at work, the relationship shall be formal. Do not talk with them unless you have to and make your answers just yes or no. Joseph- Anthony a son of Jehovah