The yard is on the side of the property against my house's property line, therefore, the light and open space for the entire side of my house is possible because of that open space.

., something like  https://www.homedepot.com/p/Leviton-Decora-Z-Wave-Controls-15-Amp-Tamper-Resistant-Split-Duplex-Receptacle-White-Light-Almond-R04-DZR15-1RZ/301187575 ) that way NO ONE should be messing with it.What we did though was the following:Added a switch/repeater to control the TV -- I never turn it on/off, but it's behind the tv and I doubt folks will mess with it since the TV is plugged into it.Added a repeater to the furnace room -- again, hidden so people won't mess with itAdded another repeater in a cabinet -- again, hidden to people won't mess with it. 

Add outdoor lighting and some obvious cameras along with some inconspicuous ones.

Would be interesting if any common threads come to light of action/inaction. 

The interior door knobs, interior light fixtures and ceiling fans are gold colored.

Within a few years it'll be a straight shot to Austin without any lights.

My lender is warning its clients that it will no longer accept payments from a business bank account, which is how I’ve been paying the loan since its inception many years ago.

Or maybe even just focus on properties with a very light rehab?

Next, she fixated on the lights. 

It sounds like you aren't raising the rent all the way to market, so when or if she starts looking around she will be hard pressed to find a better deal.We like to raise rent to the halfway point of the gap between current and market rent.I would give her as much warning as possible, would say/write that costs and market rent have gone up, that market rent has been assessed at $xx and rent will be going to $xx starting on x/x/xx.