How do you complete Monday's Spirit Week quest?

As evidenced in the screenshot, I traded in my five scrolls for the day, but I can't get the quest to go into Completed. She just keeps saying that. It's stuck In Progress. Or is it broken and we just have to let it expire tomorrow? I'd like that +1, dangit.

Anyone find how to complete it? Is there another thread about this somewhere that I can't find?

EDIT:

FFFFFFFFFFFFFFFF- NEXON. I tried it on a different character, and I completed it by just not talking to her again after the lightbulb appears. It does go into completed that way. Why the hell do they make it come back like it's a repeatable quest? Stupid!

Maybe forfeiting it will work then. Gonna try.

EDIT2:

WOW. My fears were realized. Nexon really screwed this one up. If you accidentally talk to her again after you trade in 5, you can not get it into Completed. Forfeiting it returns it to Available, then she'll give you the message I have in my SS. I'm just out this +1, even though I actually did complete it.

What a load of crap. Note to everyone who cares about quest totals: do not talk to her after you trade in 5 or you can't complete this quest.