Neighbor impeding sale

[Marsha Rost]

I own a second story condo unit which I have owned for a little over 4 years. It was a rental the whole time. Now I am ready to sell. It's been on the market for about a month and no offers. I had my agent follow up with some of the people who viewed the place and one agent told him that his clients were actually interested in the place but as they were walking out, the neighbor downstairs started yelling at them for no reason. They said they have no idea why this happened. They hadn't done anything wrong and now there is no way they are going to consider buying the property.

I have had issues with this neighbor before. She is just plain crazy. Unfortunately she is a paralegal so she is quite good at litigation stuff and when I looked her up I found that she has a history of suing people. So she isn't one to be easily threatened with legal action.

What do you all suggest I should do?

I was thinking of placing cameras so I have something against her if this happens again but I'm curious to hear your advice.

Thanks.