I am no expert and just do what I am told.  

Prior to investing, I asked my coordinator if the loan was secured and she said yes, it was secured by their property portfolio.

Unless the medical condition meets the state criteria for early termination and that the medical notice does not appear to suggest that, you cannot terminate the lease outright/immediately but that you will begin to market the property for rental and upon securing an acceptable tenant, the lease can be terminated pending a satisfactory property walkthrough indicating no damages. 

Remember, the notion of amassing wealth without investing is a dangerous myth perpetuated by self-proclaimed experts.

I know that the general guidance is that emergency funds aren't to be invested, but given our financial security and the fact that we already have a personal e-fund in a safe, non-volatile location, would it still be crazy/unwise to invest this 15k in an S&P500 index fund in a brokerage? 

With the future being so uncertain I realized there was a need to do more than just rely on my job for financial security. 

I was hoping for some idea to secure the Promissory Note but it seems that's not available.Thanks for your response. 

It’s a smart way to dip your toes into investing while securing your first home.You’re not being too ambitious at all!

.- I will keep their security deposit for funds owed.- I will do my best to garnish future wages until their debt to me is paid in full.This has worked 100% time so far.  

To maximize the number of transactions you’re involved in you will need to:Be Top of Mind when they think about moving - which requires consistent reminders.Be seen as an Expert – which requires a consistent message and Evidence of Success storiesGain their Trust – which requires communicating integritySo, start out by listing everyone you know in an Excel spreadsheet.