What is hitting me here is she bid on 4 items then contacted you a week later.

So she was on the computer then. She could have quickly paid via paypal right then and there.

In other words, she really didn't want to spend the money.

You were more than reasonable with her, it is a pity you can't do an unpaid items dispute.

But you should be able to relist.

If your time to lodge a claim has expired, has her time to lodge feedback also expired? With luck it will have.