User able to access folder without any permission

Hi,

I have a user who is able to access a private folder and I have no idea as to why.

If you select any folder or file and look at their effective permissions there is none.  The folder isn't shared either.

The only users who have access are IT and the MD.  No other user in the company can access this folder just this one user.  I have even put her as Deny for the folder and contents which didn't work.  I am lost as to what to try.

Any help would be greatly appreciated.