'To argue with a person who has renounced the use of reason is like administering medicine to the dead.'
- Thomas Paine
Good OP. I like this stuff. Not that it's helped me 'rescue' one family member in. But it's edifying, and serves (to some extent) in smoothing out some rough edges when dealing with JW family. To know them, know their motivations; their fears. This can be useful.
I've largely given up on trying to reason with JWs. One cannot reason them out of beliefs they did not reason themselves into at the start. It helps to know the family history. How some simple-minded and gullible people got scared, and foisted nonsense onto their kids, who didn't know anything else. And 2 generations later, here we are.
I like your closing remarks about being someone who cares - the 'safety net'. I'm maintaining contact with the family for just that purpose. It's hard to do this, while having no expectations at all that it will be used.