I estimate some electrical work, kitchen rehab, painting, & flooring.

Last night we had a contractor come in, assess the damage and then work on cleaning it all up, drying it out and spraying.

I discovered that there are flooring issues in one of the bedrooms so the contractor will need to cut the floor up to see what’s going on.

It's hard to find deals right now, but if you're the bank (cash purchase) or you don't care if your returns top 7 or 8% (institutional buyers) then you're going to clean up nicely because competition has greatly slowed.  

My parents own their primary with my two uncles and they each occupy a floor.

We received a small note like this: -Paint and small repairs: $ 900-Other supplies: $300-Rent ; $100 We really took care of the apartment, removing all the shelves, plug all the holes and did the cleaning myself.

Make a clean offer and be rid of the complications of allowing her to stay.

You definitely don't want a situation where someone gets hurt by traps or poison that you place.If it is more related to the tenants being pigs than a hole on the outside then it may require some education on how to keep things clean and charging them for pest control if local law allows it etc.

Additionally we have gotten ourselves in a bit of debt and could use the profits from the sale of the house to clean up our current finances (about 15k in credit card bills). 

Mostly cosmetic items in my opinion (new flooring, painting cabinetry, fresh paint, electrical and plumbing fixtures) etc and one bathroom is having a completely new tub, shower body (+ finishes) cement board walls, waterproofing and tile work.