Period

You don't have to show any forgiveness to someone who is abusive toward you, or who shows no empathy or remorse.  Period.  You are completely capable of healing without showing them any sort of compassion.  When someone seeks out help or makes apologies, it may be a different story, but when they take no accountability for hurting you, they are toxic, and their behaviors will continue.

Remember

All narcissists are hypocrites.  They pretend to have morals and values, that they really don't possess.  Behind closed doors, they lie, insult, criticize, disrespect and abuse.  They can do and say whatever they want, but how dare you say anything back to them or criticize them.  They have a whole set of rules for others, but follow none of their own rules, and practice nothing of what they preach.