Klax

I believe I've completed all of the quests for Patrick's Tower, including the librarian's. At least she wants no more books. But there's a room near her that requires 35 tool use to open and seems more a quest reward than having that high a skill to open. Does anyone know how to get into that room? Maybe a combo of tool use and Unlock doors? My tool use is 12 and my mage can open up to 25. Thanks