Son did not abandon the property per the "father".  

You can file for legal abandonment if you want to be really cautious.  

118.175Liability of tenant.If a tenant of real property abandons the property, the landlord shall make reasonable efforts to rent it at a fair rental.

What are the odds of them suing you over stuff they abandoned? 

He had abandoned the home, but still was paying insurance on it.  

If she is not staying there , she has abandoned the rental and left you her son. 

They are not interested in abandoning flourishing careers and moving to remote islands in the prime of their lives when they could stay and work at companies that are changing the world and someday even start their own companies and play the big game.As for overpriced properties, there is a reason why the market is so hot and homes get sold quickly and that’s because locals can afford those homes and that’s because they are well compensated.

That's called abandoning the property.  

Also it lets us know sooner if the unit has been abandoned. 

I have a friend who has several properties telling me to tell him the lease is broken because of abandonment from him and sign a new lease with her.