Soon, too soon, Mom will not be around.
I know it is hard, but remember that she desperately wants to "save" you from the clutches of Satan, and it is out of love that she wants you with her at the KHall and in the new system if that is still what they call it.
So many have given you great advise, I just want to say that my mom is gone, and I miss her. Don't create bad memories or say something unloving now that you can't undo later.
Wish you the best.