My UID opened automatically

 and the buyer has sent email: "changed mind, husband didn't like the tote."
So I am willing to cancel transaction, until reading this:

To close the case in the Resolution Center:
Go to the Resolution Center and log in.
Select the case to be closed.
Select one of the following options to close the case:
The buyer and I have completed this transaction successfully.  [We have not]

I want to end communication with the buyer.    [No, she would like to cancel transaction.]
Enter any final comments in the message box.
Click Close Case.

Timeline:
Close your case within 60 days of the transaction.
If the buyer agrees to cancel the transaction, we'll credit your final value fee to your account.
On the 61st day after the end of the transaction, if you haven't closed your case, we automatically close it and you don't receive a final value fee credit.
Once your case is closed, you can't reopen it.
Things to keep in mind:
You must close the case in the Resolution Center in order to receive a final value fee credit.
Once the case is closed, you can't reopen it and you can't open another case for this transaction. This is true whether you close the case, or the 60 days expires and we close it.

It makes it seem as though there' s not a way to agree to cancellation once a case is open!  Or even if I open the case, if she decides not to agree, then I don't get my FVF back.

Please advise