who is trijata?
She is a rakshasi (demoness) in the "Ramayana" who is assigned the duty of guarding Sita who was kidnapped by king of Lanka Ravana.
Trijata
 is a rakshasi (demoness) in the "Ramayana" who is assigned the duty of guarding Sita who was kidnapped by king of Lanka Ravana. 
who is monkey king in the ramayana who helps save sita UNANSWERABLE
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Trijata [SEP] Introduction
Trijata (, IAST: ) is a rakshasi (demoness) in the "Ramayana" who is assigned the duty of guarding Sita who was kidnapped by king of Lanka Ravana. In latter adaptions of Ramayana, Trijata is describe as a daughter of Vibhishana. In the "Ramayana", Trijata appears as a wise old rakshasi, who dreams of Ravana's destruction and Rama's victory. She accompanies Sita on a survey of the battlefield of the war between Rama and Ravana, and reassures Sita of Rama's well-being when Sita sees her husband unconscious and presumes him dead. In later "Ramayana" adaptations, Trijata becomes the daughter of Vibhishana, the brother of Ravana who sides with Rama.