The police was called and a report was created.   

Wanted to post a couple images of the space I'm dealing with.Once you descend the stairs from the external cellar door, you enter another (shabby wooden) door leading to the first segment of hallway.

I would think you should build up a bit of paperwork in case you need to defend your self in front of a judge. maybe something in writing from past tenant. maybe a couple calls to police for noise complaints. have you talked to tenant about the issue?

She has also begun to threaten to call the police.

Anything is possible and even if you involve police, it is hard to prove they did it. 

Depending on your city/area you may have such data available from the local police department or the sheriff's department.

Just as a single mother who is a police officer or a wheel chair bound veteran.

City services (schools, fire, police, etc.) depend upon property taxes and sales taxes.

I used to work for the police department there and they required a permit but never gave any.

Ever get a call from law enforcement informing you that the police raided your tenant and found crack and are keeping your property from being re leased?