Ideally, the solution will also be something economical    What would you do if you were in my shoes?   

How'd you resolve this and get business back to usual, and what would you recommend someone in my shoes should be looking at as a best course of action?

If I were in your shoes, I'd probably have a frank and friendly with the tenant and talk a big, threat free game, but point out that her lease does not allow for animals and that she did not disclose the animal to you.

Last thing I want to do is put my family in a bind, but fortunately the baby isn’t due till December.What would you do in my shoes?

Imagine being in the other person’a shoes and how you’d want a neighbor to respond.

In your shoes I would keep doing what you are doing by reaching out, and I would also stack up as much as you can and use that for a good down payment a multi-unit or SFR that you can house hack.  

They pay me a percentage, but they save a much bigger percentage by keeping their rents at market rate, getting tenants that pay and don't trash the units, etc.If I were in your shoes, I would cash out the equity on the home and use that for investing.

Charlie Campanella I was in your shoes a decade ago (adjusted for inflation).

I would raise it incrementally from now on if I were in your shoes.

We just had our own personal door code and it makes us feel a lot safer with guests in the house.One of the best things we did when screening guests is we would send them a "welcome message" which reinterated rules such as-Don't park in the driveway-Take your shoes off at the door-etc.and hidden (smack dab in the middle) was the "secret code phrase" that they had to reply with to confirm they actually read the welcome message.