I also had to deal with narcissistic family members. For me, the only thing that I could do to prevent them from attempting to inflict their damage was to walk away. Just because someone may share DNA or has become a member of the family through the legal contract of marriage does not, under any circumstances, mean that I "have" to accept inappropriate, hurtful, or manipulative behaviors. I won't tolerate bad behavior from a total stranger, and I won't tolerate it from a family member, either - I did enough of that, years ago. For me, there is a brighter and truly joyous Life's Path to tread.
I don't wish to join the ranks of N's and/or sociopaths. I am grateful that I have feelings for others, a conscience, and the ability to feel remorse for my mistakes and errors. I don't wish to cause others to suffer or to attempt to manipulate their feelings, actions, or decisions for my own entertainment. I just don't.
Best wishes to you.
Good luck to you.
"Not really sure of the point of your post."
I guess the point was to let you know that you are not alone in your experiences and that you actually have a choice to react, interact, or entertain any number of options that would be more positive and healing for you.
Best wishes.