Myrtle, in her own brutal way, returning Cordelia's sight. By stealing one eye each from Quentin and Cecily.
Luke's mother singing to him in the hospital after not wanting to believe Nan's readings. Up to Eleven when she takes Nan's hand during the song.
Myrtle gives Zoe one of her most valued possessions to hock so that she and Kyle can get enough money to get away and start over somewhere safe. Say what you will about her, Myrtle actually seems to care about the girls at the school.