If he qualifies, create a new lease with all adult occupants (and a sublet provision) and get it signed and place it in a known location.good luck 

It may make people feel better but does it actually do anything?

Just like if you were doing a marketing campaign for any other business type, you have a lead list and now you have to work it and see what you can sell.Yes, its a lot of manual work.

Joining BiggerPockets is a fantastic first step – it’s where so many great real estate journeys start.

In my experience, you either put the hours in up front or at the end, but either way you (or someone on your team) has to do it.

I would send it certified so they have to sign for it. 

Now if it was definitely a single unit and only she could do it and it was properly labled it would be on her.

Based on a quick answer from Perplexity it seems like there would be no issue with you buying the home and collecting passive income, but you may not be allowed to manage it yourself since that is considered active work.

Can you manage yourself?

If you think about it in a mortgage sense..