Who are the two sisters of Ravana?

Who are the two sisters of Ravana? Ravan had 2 sisters The most well known sister of Ravan is Surpankha, she is Ravan’s real sister, who plays an important part in Ramayan and indirectly in abduction of Ma Sita by Ravan. Surpanakha Surpankha means 'she whose fingernails are like winnowing fans, she was also known as Meenakshi. Some also called her "Chandraṇakhā" (the one with nails like the moon).She is a Rakshasi (demoness) and was like her mom, Kaikesi. The Valmiki's Ramayan mentions her to be an ugly woman. When Shurpanakha grew up, she secretly married the Danava prince of the Kalkeya Danava clan, Vidyutjihva. The Danavas were the mortal enemies of Rakshashas , but Ravan accepted Vidyutjihva. At the time of conquering Rasatala (the underworld), Ravana killed Vidyutjihva. This caused Shurpanakha a great displeasure, and after seeing his sister's grief, Ravana asked her to roam and search for another husband. Shurpankha was captivated by the excellence and beauty of Ram in panchvati forest. She adopted a beautiful form to entice him and wanted to marry him but Lord Ram rejected her saying that he was faithful to his wife. She than approached Laxman who rejected her saying he was not worthy of her. The humiliated and envious Shurpanakha returned to her demonic form and attacked Sita , but was thwarted by Laxman, who cut off her nose. She then went to Ravan and spoke to her brother of the disgrace she had suffered. Her brother, hearing of Sita's beauty, decided to kidnap Sita. The not so known sister of Ravan is Kumbhini. Ravan and Kumbhini are half brother and sister ( From same father but different mother). Kumbhini Kumbhini’s mothers name was Puṣpotkaṭā. She was the step sister of Ravan and wedded to evil demon Madhu. She was the mother of Lavanasura who was killed by Shatrugna, the youngest sibling of Lord Ram. Sadhana