According to the sacred texts and the Puranas Lord Ram had killed Ravana on the day of Dussehra. Many of the narrative and contexts in Valmiki Ramayana are very interesting.
Do you know a woman to take revenge for her humiliation by Ravana, born as Sita in the second birth?
Actually, according to the Valmiki Ramayana, Ravana has fallen an evil eye on a very beautiful woman, named Vedavatee. At that time Vedavatee was doing penance to get Lord Vishnu as the husband.
Ravana caught humiliated and insulted her by holding hair and asked her to come with him. She cursed him and said That He will die because of a woman. After this, she immolated herself. Then to take revenge from Ravana of her humiliation, vedavatee was born in the next life as Sita.
Surpanakha Too wanted to destroy Ravana