Robindronath Ekhane Kawkhono Khete Aashenni S01 E06 Tomar Shawnge Praner Khela

"Robindronath Ekhane Kawkhono Khete Aashenni"

While Nirupam hurls accusations at Mushkan, she seems to have an explanation for everything. But she gets stumped when Nirupam brings up 'Charulata'. Who is Charulata?