Her will strove with him for a while, but he put forth his power, and having learned who she was he constrained her to gaze into his eyes, and he laid a spell of utter darkness and forgetfulness upon her, so that she could remember nothing that had ever befallen her, nor her own name, nor the name of any other thing; and for many days she could neither hear, nor see, nor stir by her own will. Then Glaurung left her standing alone upon Amon Ethir, and went back to Nargothrond.