Thinking at it from the other perspective:

It may have not been her, but the other agent who wanted to show the house, and not giving her enough time when they contacted her wanting to show it.

Some people do travel in to a town they are fixing to work in, and only have X amount of time to look THAT day with an agent.

I understand wanting things to be presentable, but most people looking will understand as well.

Show the house, as you could lose a buyer.

God Bless,
David B.