Rule of 3s. 3 minutes without air, 3 hours without shelter in inclement weather, 3 days without water, 3 weeks without food. So it definitely is a concern.
Common misconception. Diuretics simply cause you to urinate more often. It does not necessarily mean you will urinate more than the water you are taking in. Coffee also falls into this category. The most known "don't drink this or you'll dehydrate" salt water will cause you to urinate more than the water you take in. Salt water is about 3.5% salt. Your kidneys can only function up to like 2%. This makes your body pull water from elsewhere to flush the excess salt out of your system.
I mean, wouldn't they need to financially suffer first to have a recovery? So I agree, they won't financially recover from this non-event. There's nothing to recover from.
Do they try to talk politics while around? If so I'd fucking unload on their sorry asses (depending on how the wife would react). One of the most common themes I've seen among supporters is they have a very small single issue they claim as the sole reason. So forcing them to address the full ramifications I feel is prudent.
If they don't try to talk politics, I'm not sure what I would do. But I'd definitely be making sure my wife wasn't enduring some extra trauma for the sake of family. You could try helping her realize she had the power to cut them out of her life and she can be just fine.
I mean, I'd let Pedro Pascal turn me gay. No homo.