She didn't specify which chamber, and she needs to clarify....IF the roof IS Granite, she was NOT in C's Chamber....get it???
Why do you find the truth to be "odd"???
Campbell's Chamber roof blocks are Tura Limestone until proven otherwise.
THE Cartouche in Campbell's Chamber IS Authentic, as are ALL other RC's Glyphs, until proven otherwise.
"This Forgery 'theory' has more holes than a sieve basket."