Learn how to screen a tenant, how to handle repair requests (and cordially say no when necessary).

She is not associated with a company, she's just a local girl that handles any issues that may arise and checks out new applicants.  

We use a home warranty for repairs, and they handle the calls on that.

Their company handles a large number of properties around Austin.

I'm pretty good at tracking down tax info, but I really need to find a good insurance broker to get a handle on what kind of insurance I need and what it'll cost.

Here in Nebraska they pay 14%, the state handles all the paper work so you don't have to deal directly with the property owners. 

What options do we have and how can we handle this situation without breaking any fair housing laws? 

I think the best way to handle this would be to tell them that you found out from the police that this situation is going on and that they have the power to seize your property, if this were to happen again.

I like to handle my transactions myself so these kind of things don't happen.

You can use the title company that gave you title insurance this time to handle the refinance.