I would love to tell you to be warm hearted and give them a desperately needed break but,your rental doesn't sound optimal for her poor health to deal with safely.They need a one level ground floor unit to keep her safe and you away from a potential lawsuit.The first time she tumbles down the stairs and gets hauled away in an ambulance you are going to hear from their attorney crying "Well you should never have rented to them you greedy slumlord!!"

.- Another global health scare...what a coincidence...O_o

The weakest industries in the South Bay were hotels and restaurants, which lost 1,800 jobs; construction, which eliminated 600; and retail, which shed 400 positions, the Beacon analysis showed.The East Bay’s strongest sector was health care, which added 2,400 jobs.

If the house is old then you really do need to bring the staircase up to current health/safety standards.

By this time with 20 years of experience on and off experience in home improvement, construction and repair experience I was in such demand from commercial businesses, landlords and homeowners that I was working near and some times more than 80 hours a week and my health failed as a result of bacterial pneumonia.

On the hoarder situation we have found it most helpful to include language from the public health code on sanitation.  

Assuming your lease/license is in order, and no known defects that threaten health, life or safety, you can keep the SD plus interest in the amount of the unpaid rent.

Just don't wait until your health age affect your premiums.

http://obamacarefacts.com/obamacare-individual-man...The annual fee for not having insurance in 2015 is $325 per adult and $162.50 per child (up to $975 for a family), or it's 2% of your household income above the tax return filing threshold for your filing status – whichever is greater.http://www.cbsnews.com/news/is-mandatory-health-insurance-constitutional/

In my previous situation, we built bridges, small health clinics, and schools from ground up, currently we do tenant improvements, so still, even with my construction experience previously, there is still a transition/learning curve.