Herbal life had the same scam Renatus does.

In this case you'd see if the tenants were doing things like growing herbal products or other ways of excessive use and put a clause in the agreement that states they will be responsible for the utility reconciliation.

Even though this isn’t in the lease can I still withhold September rent from her balance of the security deposit? 

That way if they grow - erm "herbal products", they'll at least be on the hook for the bill for the power that comes from the utility above your system's capability.

If you meant $1700 with interest and taxes, her balance after 3 years and 6 months would be $161839.62. 

People who put on their own roofs, fix a plumbing leak, paint their house, or take herbal supplements for an ailment are basically taking responsibility for the job they are doing.

The realtor received her balance and I had the annual fee removed. 

He had sold a house to a woman on a land contract and her balance was $31,000 and was paying just under $500 per month PITI at 11% interest.

She is also requesting that we waive her balance.

After doing this, you should spray the entire unit with either Hit Cockroach Spray or Herbal Strategy whichever you prefer.