Bonfire, yes, leaving is very, very difficult for most people because they lose their entire support structure. In all honesty, it was much easier for me, in that respect, because none of my family were involved at all, so when I finally saw sense, they actively welcomed me back.
I still had the horrible fear of Armageddon and horrible death, though, for years and years, especially for my kids. I had the fear and guilt that I was robbing them of their chance of eternal life in paradise. That is definitely one of the techniques that is used to control people, by the way, the fear of eternal destruction if you make even a minor infarction of the rules.
If anyone has read the list of reasons for disfellowshipping that I linked to earlier and is wondering what parental tolerating of immorality is then I can give you a couple of examples.
If you have a teenager that you know is spending time with a member of the opposite sex unaccompanied, then you would have to tell the Elders do that they could take appropriate steps to bring that to an end.
In White's case, if any of her family discovered that she no longer believed, they would have to refer her to the Elders for instruction and reproof. If they didn't and it came to light, they would risk being disfellowshipped themselves.
If you catch your child masturbating, you have to tell the elders and are expected to take an active part in stopping them doing it.
If your child (even as a fully grown adult), buys a lottery ticket or raffle tickets, you have to tell the Elders....
See, it just goes on and on.
I find the whole thing incredibly emotionally abusive now.