Creation of the Marauders Map. >>>> It's because the map doesn't rely on vision. It shows people's physical place, which is still possible to find if you are under the cloak. Death could not find people under the cloak because Death was relying on vision.
And Sirius is right next to her shouting insults about the way he treated Harry, while lupin glares at snape from the other diode of lily. <<< yesss like I don't feel like lily would have forgiven him for how he treated harry and his friends