So im at the part in the Forgotten Lore quest where I am to go save Riella at the nayau tomb. Iv already been down there and killed the mini-boss and cleared the entire tomb (including secrets). Anton is in the new garand library and when I speak to him he says "I see... No news of loremaster Riella or is it loremistrss?". I don't have anything to give to Anton. So what am I doing wrong?