I think the opposite is more achievable.

She is currently late on rent for the month August and still owes a remaining balance of $100 from the previous month.

Work at a bank or hard money firm that makes loans on the types of deals you are interested in.Real estate investing has lots of different facets within it, so getting specific will help you achieve your goals.

Those that claim to cashflow well are either a) full of it or b) old and in a class C area where your probability of being able to achieve those cashflows are low.

The current balance is approx. $160K and I have roughly 15 months remaining on the 5yr borrow period. 

Mitigation Strategy: Hybrid Approach: Balance properties in rent-controlled and non-rent-controlled areas.

What type or level depends some on how much $$ (or % or raise) they still need to raise, AND if the likelihood of achieving that part of the raise is high, or just not very unlikely.

When other managers do a percentage usually the percentage is of the monthly charge not of the outstanding balance, but it could be different where you are. 

@Theresa Harris I know the balance re cash flow and appreciation, but they should not claim there'll be cash flow if there won't be any.

Also check how long you have to notify the tenant that they won't be getting their full deposit back and how long you have to return the balance.