The problem was that, there was a little stream in the lot, We said that " ok, if we buy the lot and endure the DEP and all thats stuff and then we have a good deal."

Omg, don't forget the thunderous vibrations that tenant will have to endure all times of the day and night year around when they are trying to sleep in order to get up and go to work to earn enough money to pay rent...

Real Estate Business is a People BusinessIt will be very challenging to have enduring success in the real estate business if you do not understand that it is not about spreadsheets.

Besides, if you save dollars but despise what you’re doing, you’ll never endure the game of buy-and-hold real estate.

But in a greater sense of justice and enduring economic viability, I want to see the cessation of gratuitous federal lending programs and the natural, non-bailed-out correction to banks and borrowers alike.

Would talk to an attorney about it beforehand, but if she's really that bad and you don't want to endure the tenant any longer (been there) it may be worth biting the bullet to take steps and get her out. 

@Anthony DooleyLet's consider a hypothetical scenario your tenant on top floor one fine day decides to shower outside of the bath tub  near the toilet causing a wet subfloor and keeps doing it repeatedly until you start seeing leaky ceiling on the lower level floor, would you dismiss it with a "not too broke" argument and endure the repairs out of pocket?

It is semi desert and while it does cool off late afternoon or evening, many are surprised at the temps they will have to endure. 

I absolutely love your story and the level of work and dedication and sacrifice that  you endured to get you to your current place in RE. 

If the tenant fails to pay in full, I would then post notice and get an attorney to provide legal advise.It might be helpful to remind the tenant that if they were the owner of the property, they would have to pay for the repairs AND endure the inconvenience.