I was more concerned on the ROI rather than finding the right home.Make sure you listen to recommendations from the experts you've hired.

They installed granite for my property and I will hire them again.

If you don’t feel comfortable cold calling, you would have to hire that out.

Have you considered hiring him to pull rickshaws?

I linked an article above from our company site/blog post that was scrubbed, but in it I spell out that the value add based on our knowledge of the laws is a huge reason to hire our firm. 

Didn't cost much to hire someone locally and they do a good job. 

It sounds to me like you need to fire your current property manager and hire another one. 

If you're hiring a cold caller directly then you can get them for cheaper, but you have to deal with training them, managing them, and troubleshooting issues with your dialer when those issues come up.

Hire an attorney experienced in evictions and get rid of her.

Each idea you mentioned is a completely different ballgame and therefore completely different businesses (would need to at least hire many people).