Willow vs Buffy/Giles Magic showdown

I read this story long ago, it was after the resurrection I believe and Willow and Giles are having a magic showdown in the magic box and she'd almost killed him when Buffy comes in and uses her own magic and strips or binds Willow's power before she can do any more damage

Hi,
Is it;

Out of the Ashes by Revello_1620 Rated:

Summary: What if it wasn't Angel who left S3? Feeling lost Buffy heads off to find who she is without Angel and her Sunnydale friends and Spike just happens to be on the same personal journey.

http://spikeluver.com/SpuffyRealm/viewstory.php?sid=13474

This is the only one I can think of where Buffy has magic

I think Buffy has magical powers in Replacement by Sus but I don't remember if it has a showdown happening in the Magic Box. It can be found on this site.

Sadly, I'm fairly certain it is neither of these mentioned although they are indeed excellent stories. Thank you though

There is a magic showdown between Giles and Willow in "Clocks of the Long Now" by lostboy.

Buffy has powers in Ariel Dawn's Second Youth