The problem is that one of the two units is covered by the rent control ordinance in LA, and she cannot evict the tenant.

But you have zero control over it.

Apparently, while living at my apartment his life spiraled out of control.

Define the risk, categorize the risk, mitigate the risk and control downside risks.  

Control the greed and provide the service.

FIRE the old company (ABC) immediately and take control of where those rent check go to.

I am a addict when it comes to deals and look several times a day in my local market and missed some great deals how ever in my market I would suggest a duplex because in my city everyone works at the heart of it and the land here is just used up so its prime rentals either way I go home value has shot up as there is just no more land to build on unless you go out of town so SFH are overly priced so its a ruff cash flow, for me   I will be doing a duplex for following reasons 1 more doors = more safety if a moves out b is still helping to cover my payment 2 its still 1 roof 3 I control the value of said property if I really make it diamonds = raising the rent to the cap it controls the value of said property.

Numerous times throughout the past few years, I've strongly considered taking the 90-hour course/exam to earn my license here in Indiana, but have heard mixed opinions from local agents on whether or not it would be feasible, beneficial, profitable, etc.I currently have a W2 job as Controller of a midsize beer wholesaler that I do not plan to leave any time soon.

Dave Ramsey offers good solid advise for the average middle class slob who can’t control himself but his approach is so conservative in this day and age that you won’t make much for fear of risk and you will save till your dead using his methods . 

And coming back for a 3rd inspection, because of a small detail (beyond my control), he still won't lift the order.