We're running 3.7 on OES2 SP1

When looking in Web Admin, I've got a user with an amount of their quota shown as used, but no iFolders listed. There are also no orphaned iFolders on this system (which wouldn't make sense anyway since the user still exists.)

Enabled reports and it shows there's a folder listed as owned by this user. I can delete the folder, but I'm not confident that will fix the quota issue.

How can I clean this up when I can't see the iFolder in Web Admin to delete it?