OP
You have misunderstood. I'm not saying YOU have married a Narc. The only LC in any kind of relationship is when you are coparenting.
Grey Rock does not work.
The reason GR does not work is that in your situation, where you are largely always been used to draw negative fuel from, you are being smeared by your mum. A lot. You appear to be continually painted black.
So you might be reasoning, if I dont tell her stuff then I wont be directly attacked or smeared?
Wrong. That is your Emotional Thinking talking. As was your response to mine. You misinterpreted my words to you. Rather than question what i meant for clarification, you popped one off. I'm cool. I can see where you are coming from. All good. 
Again this proves your ET is running very high.
Bottomed line is this. If you continue to interact with a narcasssit in any way shape or form, they will just simply make shit up. This us because there are two factors concerning the Hoovers.
These are the Spheres of Influence and the Hoover Execution Criteria.
You are continually lowering the bar on the HEC by interacting and therefore falling into the SOI. There are 6 SOI. The 6th is the mind of the Narc. The others are concerning physical and electronic proximity. How easily a narc can deploy a Hoover.
You cannot stop thoughts of you entering their mind. But you can considerably reduce a Hoover by ensuring that getting any message to you will fail.
One of the hardest things to ever do is to turn your back on a parent. Both my parents are narcs. My father being of a superior school to my mother would utilise her often against me. But both were unaware so both their actions are instinctive and in the now. As is your mum.
I dint get hoovered because they cant get a message to me. The likelihood of them physically getting to me is close to zero. Plus my Dad like a lot if his school are utter, physical cowards and woukdnt be able to drive onto the Traveller site I now live on.
So it works.
Your mum is a very typical mid ranger.
I strongly suggest you listen to the link provided and I would suggest you consult with HG Tudor himself. Well worth the money.