However… Rowena was not an Occlumense? Without knowing that this problem might arise later, I doubt that she would have not learned it. And creating the Diadem is likely to be harder than learning Occlumency… Unless there’s people who just can’t learn it, and she is one of them. Seems like a stretch. Or could she never use it?
Also: if the Founders had all the requirements already, why didn’t they finish it back then?
Agreed.
However… Rowena was not an Occlumense? Without knowing that this problem might arise later, I doubt that she would have not learned it. And creating the Diadem is likely to be harder than learning Occlumency… Unless there’s people who just can’t learn it, and she is one of them. Seems like a stretch. Or could she never use it?
Also: if the Founders had all the requirements already, why didn’t they finish it back then?