"CatherineAnde The angel Anna was killed by archangel Michael in the vessel of young John Winchester when she took an ill fated trip to the past to try to avert the Apocalypse by killing Sam and Dean's parents before they were born. and speaking of born, when Angel Anna lost her grace and fell to earth she was reborn into a human body-a human baby-I'm guessing the newly fallen won't have to deal with that or the loss of their memories and most of their powers"