She makes her rent payments through PayPal, so there's no way to prevent her from sending these payments.

Screw down your art work, bold your beds to the wall and do all you can to prevent damage.  

@Joshua Stein - I’d start with two things- ask them where the clog is.

I'm sorry this happened to you, and it's one of the reasons that I try to use an estoppel agreement to cover clients who are inheriting tenants when they buy a building; not that it would have prevented this but at least it would give both sides of the story before closing. 

That usually prevents any complaints.I think the best thing you could do is extra padding upstairs.

Appraisal can prevent the policy holder from hiring an attorney if the outcome isn’t in their favor.

Use this as a productive measure to try and figure out how it happened,  and what you can do to prevent it, or prepare for it in the future!   

Or the old standby, "we really can't afford to raise the monthly fees just because some of our costs are rising, let's just postpone that preventative maintenance project until next year".

Toilet overflow is typically caused by someone clogging the toilet, flushing, then walking away and the toilet continues to run for some time.

In this email, there are five items. 1) Outside spigot is leaking water inside the house - we have never used that spigot. 2) a dead small aspen in the front yard3) clogged gutter4) Deck has rotted posts and floor boards - "unsafe for his children"..."