You can't call up Apple's CEO and suggest improvements, but you can definitely upgrade your rental property's kitchen to command higher rent.

If you are newer I'd suggest a house hack unless you can rinse/repeat this process again. 

She's not going to have any leg to stand on in court if you get that far unless there's some explicit language prohibiting the owner from assigning responsibilities to another legally authorized party, and I'm guessing there isn't if another PM company was maintaining the lease and provisions - and the fact that the tenant was voluntarily working with the other PM confirms the acceptance of an authorized agent even if it's not explicitly stated, the same way if you accept rent from a tenant after a lease expires you imply acceptance of the lease terms continuing (which is why you should always have a holdover provision). 

Can anyone else suggest other real estate or economic newsletters where I can get big picture news on the real estate markets and economy? 

Depending on what you are trying to achieve, there may be some other lenders I could suggest. 

I appreciate your suggestions.

Thanks for everyone’s suggestions I guess I am a bit ahead of the times.

I suggest you find other sources of income or partner on deals to grow your real estate portfolio.  

They listen to what you suggest and continually improving their software and processes.

Quote from @Stuart Udis: @Danielle B What data are you relying on that suggests Section 8 leased properties provide for better returns than other investment strategies?