Then file the eviction.Last - stay non-emotional.  

Enforce late fees and always proceed immediately to eviction when clock ticks down.A tenants personal life issues are not your concern, working with tenants problems 9 time in 10 will only cost you more lost income, landlords are not social workers or family, you need to take all emotions out of your business.

Never rent something that you are emotionally attached to.

What are the current Utah laws concerning emotional support animals?

These people don't have control over their actions and emotions, which turns into a long, expensive headache for you.I hope this works out for you! 

Trying to get a pulse on this deal because I feel like I am at the point where I really want to go after my first deal and I might be letting emotions get in the way of my judgement.

The trouble is that many of the same lenders I have used over the years are all maxed, I have even made calls to more "emotionally expensive" sources (EX. the types that call you to let you know that they have concerns about shingle color on the house they lent on and think it should be changed, two to three times a month) and even most of those are tapped. 

I prefer respectful clients who can discuss the issues less emotionally. 

Is it just the emotion of it being your grandfather's house that is driving you to want to keep it?

I would encourage putting your emotions about the home aside and viewing this from a strictly financial perspective - Are you really better off in the long run trying to keep this home?