Also, I'd immediately take away the gun. That is the last thing anyone needs - a person who just had a neurological event, possibly on a bunch of medications, in a new environment, with shakey/weak hands/trigger finger.
YES YES YES YES YES and YES, DEFINITELY!!!
This sounds "spot on" to me:
Former public health nurse here. Believe it or not, his situation, dire though it seems, is not that uncommon. The hospital is mandated by law to make a safe discharge plan. It is their responsibility, not yours. There are plenty of people in bad shape and with no money living in rooming houses and being cared for by a range of county services. The hospital social worker will know how to coordinate the discharge, so let her do her job. What you want to do is to be aware of what they're doing--, but making it clear that while you are very concerned, and can have some minimal involvement (very minimal), you cannot provide the care or financial support. You need to sound like you can be of some help in a dire emergency (like bring some food over to him if his aide gets killed on her way to work) or whatever...but don't take responsibility for much more than that. They like to have a family member as an emergency contact--but make sure you are very firm with them about what you can and (mostly) cannot do. It sounds like they're going to have to get him some emergency Medicaid tied in with public assistance, some Food Stamps, put him in a homeless shelter maybe for a while as they look for more suitable housing--maybe get Adult Protective Services involved--set up a home care plan that involves skilled nursing, PT, OT, maybe a Voice of Help button--but as I said--they'll know how to do this--make sure they know who you are and where you are, but don't muddy the waters and get in the way of him getting his benefits. As far as the hospital bill, your father can work out a "payment plan" with them--where he pays $1.00 a month forever or something like that. They'll probably want a payment plan, but they know perfectly well they are never really ever going to get paid. Hospitals set a certain amount aside in their budgets for these situations. It's another thing they are required to do by law. Again, it's the hospital social worker's responsibility to pull the discharge plan together...and "Home with family" is not the discharge plan...so stand your ground Good luck with all this.