Do what you can to get her to leave without needing to file for eviction with the court.

I notice that investors from CA will buy a huge apartment complex in TX, AR, or TN, but you don't see an investor from those states buying big in more expensive markets. 

He calls me yesterday to tell me that the court took away his POA and the house.

I need all kinds of agents working at the company because I can get my flips sold in a heartbeat by the traditional, open house, sign posting agents; I need commercial agents for my big apartment complex deals, I need land only agents when that comes up, I need REO only agents.

Those that charge $400 for the SD rent their units faster and tend to end up chasing tenants for damages/lost rent through the court system.Be aware that there laws related to security deposits and in some states here there are limits on the amount of security deposit a landlord can collect.

After the auction the courts will issue a deed placing the purchaser at auction in title to the property. 

As for judgments, mentioned by Bill Hochstedler, in MA a court case is a public record (and now many court dockets can be searched on line) but unless The EXECUTION was recorded by the sheriff as a lien against the real estate, it would not be at the registry of deeds.  

My parents owned an apartment complex, several SFHs and even a hotel at one point.

Make sure you can handle the complexity and scope at your price point.Talk to some neighbors about area rents to double check.  

Subject property is a 14 unit complex,  built in 1980s,  decent condition with no major repair anticipated.