She chose to confront the situation and remind me later that it was absolutely not OK for that to happen.  

@Patrick Philip you just hit on the main issue that confronts aspiring investors.

Am also confronting the same concerns. 

Anna, honestly, I think that if you take the time to outline all the issues you are having with the manager, confront them, and just ask them to terminate the contract, they may simply concede as a good business decision.

And your probability doing this guy a favor to now confront his girlfriend.

I would recommend sending them a letter directly inquiring about the property and stating your interest (I find direct mail is a less confrontational approach).I have access to the MLS, I don't mind running a search on the property and giving it to you.Good luck and let us know how it goes.

If you know when they are there  I would give a verbal warning or written warning if you don't want to be confrontational. 

When she confronted him and withheld payment for the next work item until he pays the electrician, he walked off her job.

Lying in the beginning is not a good sign and confronting them may only lead to more lies.

The owners have never wanted to make waves with the tenants so they've never confronted them about raising the rent.