There is also the chance of offering covered parking at additional cost to tenants, storage, charging utilities back to them if they are not currently, etc. 

Someone has been leaving doors unlocked and open, which is not cool since there is storage down there.

.#5 11unit single family compound (9 small 2/1 and 1/1s, two of which are duplexes) with a 10 unit storage building and 1 extra lot for a possible RV rental.

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?

The style is Prairie school/Arts and Crafts, 20+ windows for each of the two apartments, which each measure 1760 ft2 with an additional  880ft2 of storage space for each apartment in the basement.

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.