I just did all the Mantra's in order, my key sword is glowing, I made my way to the area where the mother's Ankh is supposed to be and its just an empty room
Do you have all the Key Seals and the yellow medicine?
Put a weight at B-2 or it won't show up.
AngelofApathy thank you... I missed that dias compleatly, I went in the room and must have just left without noticing it.