Assuming for a moment that his mother has said something which Minimus has relayed second hand to us here in the forum, does a decision like this not require two witnesses to hear these words spoken directly from his mother's mouth? I recognize that this is not a case of Disfellowshipping or Disassociation but in the way it has been described here it sounds almost like a Public Re-Prooving which would make it a punitive action nevertheless.
I can't help but wonder though, Minimus, is it possible that you (and all of us for that matter) are jumping the gun here? You mentioned that she was grilled for a time on her family and their JW frowned-upon ways, perhaps they wished to see where she stood? You also mentioned that they acknowledged she has reached a "milestone" in the JWs. Reaching a milestone in an organization is usually something which is celebrated and not penalized (yes I realize we are talking about the borg). Is it at all possible when they publicly announce that she is no longer a pioneer that they have something else equally meaningful (or more meaningful for that matter) in store for her which recognizes her contributions? After all she is almost 80 and ill. I know that the borg have all too often been cruel and insensitive but is it at all possible that they may have something more Christian-like in mind for her?