OK. That is a sticky wickett for ya! There may be more going on here with the family dynamics than you’ll know or care to find out about.
Has anyone else seen the gal’s audiogram to verify that her hearing is “very well” as tested? I’m just askin’ …
Sometimes folks either bully, ignore, cover up or confront health issues with family members. You tried to share valuable advice, and it likely fell on a brick. You’ve done what you can. So relax, LET GO and let Fate take that couple down their designated path. It’s out of your hands.
You don’t apear dysfunctional at all to me, having read your posts on the board here, so just push that nonsense right away. And yes, there is a HUGE “mental component” to hearing. That is exactly why folks who need aids and don’t get them trundle down the path to dementia.