"No idea why it says Spam! "

Some combination of words, or some subject, has triggered the anti-spam
program. If you have programmed your boxes so any mails marked s p a m go
into it, you can lose some of the legitimate mails, but it's a jolly handy
way to avoid wading through all the real and nasty spam - delete all. After
having checked whether sauna stuff is in there!

" My ex-husband has Parkinson's. As
he is no longer mine to influence,... They both stick
strictly to what the doctor tells them and dutifully take the
drugs he gives..... Any ideas on stealth tactics?"

Not ethical, you have to be upfront. All you can really do is say you have
found information that could help the treatment work (even!) better, and
that you'd really love to do all you can to help. Apart from that,
unfortunately, if they have closed minds you have to leave them to their
outcomes. If you pressure them, it could ruin the rapport you still have.
Then you can't even offer to help.

The way I look at it!

Rowena