But she tried to retreat behind her mother's mental deterioration as an excuse to back out saying I wasn't being "fair". 

I can’t imagine costs retreating anytime soon.

You are not renting a room.EXECUTIVE QUALITY FURNISHED APARTMENTS:2 BR apartment - Working Labradors - 3 beds2 BR apartment - Resting Labradors2 BR apartment - History Channel - 3 beds2 BR apartment - Home Theater2 BR apartment - Sports2 BR apartment - Ocean Sailing Ships - 3 beds2 BR apartment - Dogs Playing Poker2 BR apartment - Action Movies2 BR apartment - Rock and Roll2 BR apartment - Quentin Tarrantino2 BR apartment - Country LivingAFFORDABLE FURNISHED HOUSES:3 BR house - Schwarzenegger Tribute - 2 baths - 4 beds2 BR house - Garden Spot - 4 beds2 BR house - Matchbox 203 BR house - Forrest Gump3 BR house - 5th Street Retreat - 4 beds4 BR house - Grand Central Station - 5 beds3 BR house - Retro3 BR house - The Green House - 4 beds2 BR house - 7th Street Retreat - 3 beds2 BR house - 6th Street Retreat - 3 bedsBIG HOUSES:The Hunting Lodge - 2 story - 5 beds - 2 bathsThe Taj Mahal - 2 story - 8 beds - 2 bathsThe Big House - 3 story - 8 beds - 4 baths

The Mediterranean-style retreat spans four acres in Bradbury Estates, a guard-gated community just a few ironic miles north of Baldwin Park (where Snyder’s grandparents Harry and Esther Snyder opened the first In-N-Out Burger in 1948).

I'd like to use this for several reasons including various types of farming, recreational areas, and eventually a spiritual retreat/addiction recovery center.

It will host a healthy cooking school, yoga, massage and meditation.

Ya I was gonna say...whisky and yoga.

The first floor contained a coffee shop, yoga studio and gym.

Now I don't bother, just have handyman replace damage and re-treat if needed. 

Another option is to offer the tenant you will pay for a one time service with a retreat and she pays the ongoing bi-monthly service.Although fleas are not usually a pest that City health codes require you to treat (unlike cockroaches and rodents), doing so will create good will with your tenant and she won't balk when you issue notice for a rent increase.