Tell briefly about Electra's mother Clytemnestra.

Clytemnestra is a miserable, wretched, and intimidating
woman who inflicts verbal and physical abuse on her family and servants. Electra is the
only one who isn't afraid of her. Clytemnestra's behavior stems from her guilt over
killing her husband, Agamemnon, after he returned from the Trojan War. She has no memory
of the act she committed with her lover, but she's unable to sleep most nights, or when
she does sleep, she has terrible nightmares. Her sleep deprivation affects her ability
to function during the day, and she feels like a zombie. Clytemnestra prays for the gods
to take away her pain and tries to do things that will appease the gods' anger.
Clytemnestra takes her misery out on everyone around her.