/aop alias troubles

[pie]

Well, my girlfriend continues to get lost in the world known as Invision.
She ended up typing /aop <nick> and it added said nickname to its aop list (in the format of <nick>*!*@*).
Now, for some reason or another, this doesn't add the user to any of the userlists - and I'm not going trouble myself to look through all of the many settings files to find the particular one with the user in it.
So how in the world would you remove the user from the /aop list?

[L|B]

press alt b then go to control then in the drop down box select op and remove the nick

[pie]

[Riamus]