I dismantled the Awoken Memento a while ago, not knowing what it was. Then I realised it was for Wish-Ender but I couldn't re-obtain it. People tell me I can get it back from Petra, but It won't give me it back. I have to present it to the Sjur Eido statue. How do I get it back? Until I can get the Memento, Wish-Ender is unobtainable.