Myrtle was born to two Muggles. At the age of eleven, she received a Hogwarts Acceptance Letter, bought a wand, and attended Hogwarts.
Myrtle was sorted into the Ravenclaw House. In her Hogwarts years, she was teased by her classmates because of both her appearance. She had a very worse enemy, Olive Hornby.
In Myrtle's third year, her enemy Olive Hornby teased her. Olive made fun of Myrtle's glasses and left Myrtle sobbing secretly in the first-floor girls' lavatory. Shortly after Myrtle entered the bathroom, she heard Tom Riddle speaking in Parseltongue to open the Chamber of Secrets.
Myrtle went out of the bathroom stall, regonizing the voice belonged to a boy, she yelled at Riddle to make him go away. On Riddle's command, the monster inside the Chamber of Secrets, a Basilisk stared at Myrtle. Myrtle saw the pair of magical big yellow eyes and died immediately.