It's basically an offer for her to leave without penalty or to stay and play according to the rules, which starts with an animal violation fee and one week to remedy it or face additional penalties.

They want us to fix all this and mold remediation and haven’t even paid rent for this year and now we have started to evict an will be filing today but the city has deadlines and we need to comply. 

My plan at this point is to bring in a water company to remediate.

., rehabilitation) to its condition.The Employee recognizes that immediate and irreparable damage will result to the Employer if the Employee breaches any of the terms and conditions of this Section XI and, accordingly, the Employee hereby consents to the entry by any court of competent jurisdiction of an injunction against him to restrain any such breach, in addition to any other remedies or claims for money or damages which the Employer may seek.

The remedy is not as simple as getting rid of a tenant.

In October 2015, HB 174 adjusted several residential property laws including 47G and 47H, and the UTP remedy changed to a more concise (paraphrasing here) 'evictions stay in district court and the aggrieved tenant buyer can initiate "asserting that claim in a separate action"'.The way to avoid problems is to follow the law.

The most extreme remedy you asked about is rescission - the court undoes the contract and attempts to put each side back to where they were as if neither entered into the contract. 

You can't stop her from breaking her lease, but if she does break it, the law gives you certain remedies. 

What would be considered "reasonable" actions on your part and costs related to remediation of the damages done.

The OP indicated that she was told minor repairs and ended up with a $75K rehab and termite infestation -- not sure how a wholesaler remedies that kind of issue?