I think narcissism abusive victims generally either go..
A) become narcissists themselves out of adopting their abuser's behaviors to release their own frustrations.
B) become opposite personalities as their abusers out of repulse - which in turn they become anti-narcissists, although adopting traits such as having very timid and pushover personalities. For myself, I think I have became B.
I still remember the HR director at a holiday work party once when she was very liquored up, remarked to me that she suspected I grew up with a narcissistic person and went through abuse, based on how I interacted her and observing how I interacted with others. She remarked how easygoing, conforming and walking-on-eggshells-ish I am when I talk to people. When I told her that our mom was abusive, she said "yeah I know, because I grew up with a narcissistic parent as well". And she tells me the one and only real solution to dealing with them is their absence. Every countermeasures you take, every book you read to deal with them, is just a bandaid.
What goes up, will inevitably come back down. Whoever you have to step on when you go up, you will be at their mercy when you go down.
The truth is strictly what the ones in power perceives it to be.
Enjoy any good things, even the little and menial ones, as you will never know what impending distresses could descend upon you in a moment.