Since it sounds like there's plenty of fat on this deal, I would say do what she asks and do it right.

Thanks for taking the time to share your input and experience.Follow up question:  let's say I do generate reliable quotes and present a price reduction to the seller.

Every Christmas she argues for rent reduction.

Cash on Cash is calculated by taking the Cash Profit (calculated after mortgage interest, but before Principal reduction) and dividing it by the Cash Invested.

There's an old saying, "Pigs get fat, hogs get slaughtered."

Each county and municipality has a different tax rate.Primary residences get a reduction and can be paid in 2 installments. 

One month, he wanted laminate flooring which I paid for and he did the work for a reduction in rent.

They can't determine the throw off of an investment over a 5 year period because they don't know to take into account appreciation, depreciation, principle reduction, cash flow, etc.

The converse is also true: as interest rates are lowered, people's access to credit shrinks, sliding the entire demand curve to the left, and thereby the intersection between the two curves downward (signifying a reduction in price).

Need to know the real N.O.I.Always us a study period - take your time - understand why seller is selling to you - has it been on the market, for how long any offers any price reduction, what are the comments on the listing, whats wrong with the property?