glass cabinet

I have floor plans, knife and been to the pictures....But I don't seem to be able to move this thing. I have read all the discussions on this in this forum..I just don't know what I am missing...Please help.....I am at the right one??? Is got the doll in it?

I think I got stuck forever at this bit too. You can google a walkthrough. Len Green wrote it. There's a picture of him on the sideboard in this game!