Raven, I'm so sorry you are being harassed and subjected to emotional blackmail. This is the letter my attorney mailed to the elder bodies of the two congregations I formerly attended locally. I modified a letter from this site to suit my situation. I didn't want to disassociate (play by their rules), nor did I want to deal with the repercussions of living in a small town as disfellowshipped.
They did not announce anything from the platform. Local dubs still make small talk when we cross paths. Of course, there is pre-emptive shunning going on, since I'm seen as "inactive" and "spiritually weak", so no one initiates contact with me. I expected that. At least I don't have to deal with public shunning. I just smile and ignore the pleas to "return to Jehovah".
Thankfully, I haven't run into any of the dozen or so elders I threatened to sue. When I was still in, the majority of elders were imported from other territories to "assist" the congregation, so they don't live nearby. Small town rural New England with no real employment opportunities and high property values doesn't attract the typical JW family.
Maybe if they don't announce your name your mother won't shun you. Only time will tell. Because your mom is taking this to the elders, it may be too late, especially after she attends to this year's R.C.
My attorney was so flabbergasted that this goes on that he sent the letters pro bono.
Wishing you happiness and freedom,
Diane
https://www.jehovahs-witness.com/topic/436340001/matter-conscience-am-resigning-from-christian-congregation-jehovahs-witnesses
Edit to add: Sorry, I see that you just posted that your mom is already shunning you!