You are not stalking or harassing her, are you?

A disgruntled landlord who lost a tenant fair and square due to uninhabitable conditions, harassment, or any of the other myriad reasons a tenant might leave, could just write that the tenant destroyed the property - and who would verify that?

Unless you have a HUGE number of units where a pattern can be established nothing will happen to you.I usually just tell them the insurance story and tell them I don't care and that their scam doesn't carry any weight so as to dissuade them from harassing other landlords., I can't rent to them as my insurance doesn't allow dangerous breeds and the mortgage company requires insurance.

So my tenants report to me that one of the neighbors keeps stopping by the property and talking to them about their kids harassing his kids, which is not the case. 

If the sale has already taken place and the buyer is harassing you and your mom, it's best not to respond.

Stick to the facts about the behaviour in the office and have a restraining order filed in addition to harassment. 

My PM had to harass them and finally two paid.

After the tenants moved out, I have notified them that any communications from this nasty lawyer will be considered harassment.

And this will get the neighbors calling the cops on you, in a pretext to harass you.

He also said that it might create a lot of pain for a new investor like me since the HOA might harass me even though they may not be able to fine me legally.