An Angel's Atonement

God said, "As an angel, you caused a girl's death through a mistake. Now you must atone for your sin. "Go to the mortal world and take the girl's place. You may return to Heaven only when every human there hates you." The angel accepted her mission, folding away the wings that let her soar through the sky and hiding the holy light that symbolized her divinity. She had thought the task would be simple, but there was one person who refused to leave her. She only wanted everyone to hate her and think her presence made no difference. So why was it so hard? Were the accidents that kept happening acts of God or the work of man? Would the angel ever make it back to Heaven...