They have no problem paying rent for an able-bodied adult, but no way they'll show compassion to a Landlord!

Logic: The city wants to allow kitchens downstairs for in-laws, adult kids, etc. because they're considered part of the family and would probably move up/down between living spaces.

With any adult in the area.  

You're already ahead of the majority of adults now.

Then it is up to tenant #3 who is staying to provide a new deposit that same day as the are beginning a new lease/tenancy that day.That being said, you're all adults.

I saw what type of people they really are when they brought several adults and children over yesterday. 

Or kicked in just as fast by an adult. 

But then things took a turn for the worse in October when her adult daughter (also a tenant in that home) was supposedly hospitalized for COVID and was out of work for a couple months. 

It sucks, but that is how being an adult works.

I think you can limit the number of adults in one property as part of your criteria (verify for your state).It's a red flag for me to need that many people to make your minimum income/rent requirement.Make sure you are familiar with the fair housing rules and you apply your criteria the same way for any applicants to your properties.