I replaced the batteries at the controller near the bedroom and it worked.

If she is unable to have a civilized conversation then maybe you need to put some showing notes in your listings to the Agents to just beware of the neighbor who suffers from some kind of mental health issue <-- not too sure if you are allowed to do this since technically I believe this is a protected class but I would maybe consult with your local real estate board.

They are getting to the point where they need around the clock care and need to sell their house  where they lived to help pay for the health care and living expenses .  

Are you wanting students that are aging out of foster care or people with mental health issues or seniors or... there are lots of options but I’d be nervous about why it’s vacant and being foreclosed.

Habitability is the condition of a unit in which tenants can live free of serious defects that might harm health and safety. 

Unless it’s frangible (deteriorating), asbestos isn’t considered a health issue.

@Mark S.Something personal could have happened - like a family crisis, a health issue or even death.I like @Michaela G.'

And, depending on your water source, a well permit and quarterly testing for the Brevard Health Department.All the permits total around $500/year.I own several units in the Melbourne Beach/Space Coast area so I'm familiar with the local laws if you need some more info. 

I'm really worried about this, in addition to being worried about my moms health, I'm a mess.

Half of the questions I could research (asking my insurance agent for a health insurance quote, for example), while the remaining questions I concluded could only be answered after I took the plunge.