Restrangled, I am sorry to hear your mothers wishes were not respected. If she is alone and felt uneasy was the conducter notifed? He should have handled that. If your mother is unable to do this maybe you can do it for her. I would traverse hill and dale for one my family and certainly understand your feelings.
I have seen the book study arrangement abused several ways. I have seen persons who were DF then RS not welcomed into a home and forced to attend the KH book study. It is a way of stigmatizing and also one of the many ways jws are so biased against those who have "sinned". I have also seen it used to keep the poorer less well off jws out of the nicer jws homes. We all know jws have class distinctions --just like everyone else.
I think it does matter why a person was DF, a child molester is different than common fornication. Of course I think according to the Bible all serious sins incur the same penalty. I'm not really disturbed by most things jws DF for. However, a child molester, a murderer , a rapist, armed robbery- those things have the potential to harm me personally. However, If we stigmitize those who have sinned are we not making it harder for them to turn their life around? I find this confusing to deal with , especially if I call myself a christian.
As several have said, any position that puts you in contact with children or in authority should require some clearance.
(I can find no way to make spellcheck work in firefox, sorry )