So, how do I respond to it? I can hardly tell this slip of a girl that I won't set foot in the hall ever again, that my brother got away with molesting me and the other zillion reasons I now know about this religion. Plus I am fading, I don't want to give anyone a reason to report me.
So, do I just send a nice letter back, thanking her for her concern or what? What would you do?
I wouldn't respond. To me it's clear that cynical you is right. That's a person that you just don't know, and the entire event is just as strange as the rest of the JWs. It is a manipulative thing.
The important thing here (in my humble opinion) is you, not only how do your feel about that kind of plot to get you back into the meeting, but also, how do you feel about those efforts? Do you have doubts about your decision for it? Is that making you think twice?
I don't know your particular reasons for leaving the JWs, but whatever void they were filling, have you replaced them with something more fulfilling?
The JWs love to have the last word in everything, and they like things done their way and because they say so, and they use whatever they can come up with to accomplish that, including using children (trust me, I was used that way many times).
Do you want those people in your life? If no, ignore and keep going with your life. Fading is not for them, is not something they like and will let you do peacefully. Fading is you gaining the strength and support and filling your life with whatever you need so you can set appropriate boundaries with them and tell them to leave you alone when/if appropriate.