That is a distinctly different set of circumstances from Texas tax sales that I'm somewhat familiar with.Which of the two scenarios is closer to the OP case?

I must occupy my current home for a year unless there are some unforeseen circumstances.

Personal Factors: Consider your skills (renovation vs. property management), availability of capital, and risk tolerance when choosing a strategy.In today's market, both strategies can be viable depending on your goals and circumstances.

First, I'm not a lawyer and under no circumstances offer legal advice.

Keep your goals in sight and stay adaptable to changing circumstances.

Are there any circumstances under which you would find it advantageous to double-close when you had a cash buyer willing to buy assignment from you?

Very unusual circumstances I think. 

So, the stigma that Austin doesn’t allow STR investment properties, outside of special circumstances, now seems inaccurate.To be clear, this doesn’t mean that there are no rules or regulations.

To make a wise decision, examine your comfort level, goals, local market circumstances, and property management.Good luck!

If she doesn’t want to let you show it, then that’s fine but you’ll need to be more firm on the termination fee, maybe reduce fee due to special circumstances if she leaves it in great shape.