I'm not 100% sure the person in my life is a narcissist but they do this pattern with everyone and cried about lack of attention when I was 2 days post giving birth....
They bitched about me behind my back to the entire extended family and at the time it was weird as one by one relatives started to blank us and pull away from us. We didnt know why. We would do one minor thing to make a relative think badly ( eg I tried a sip of alcohol at a family bbq as I hadn't tasted that one before but I was 6 months pg) so at the time this person followed me to the kitchen and told me that I had upset x who was trying forca baby and y who's child had ASD so I left the bbq. No one there has ever talked me since so I presumed when I left they was back filled with poison about me, just for tasting a drink, I didnt drink it!
This then turned into a pattern and slowly all the family seem to dislike us.
The thing is, now Mrs Narc gets upset that we dont ever see any family, I just tell her it's so weird as they all seem to dislike us now and they make me uncomfortable.
So I never confronted them. It's sad but ultimately Mrs Narc has been twigged as a bitchcy person and I will never ever been in any family event with or without her ever again. I hope that's what she wanted as it's been too long to mend bridges.
The main thing going forward is to keep them at arms length from every one that I care about. Unfortunately for them, that means I keep at arms length too. I hope that was their desired outcome.
Now with FB and being free to spread hatred I have people private message me asking if this person has been hacked or mentally unwell. Unfortunately now people can see it for what it is, but for me the damage is done and too much time has passed.