Making it to the window, I noticed it was open and flew through it. Flying down a few more hallways and I was in front of the Come and Go Room. Dropping out of my raven form, I landed in front of the doors and opened it with my sight instead of walking in front of it. The door opened and revealed the pile of furniture and lost items throughout the years. While I knew where the diadem was, I needed to make sure the cabinet was disabled.