"Listen to her and respond to her if you have the guts," Sisodia said when a journalist wanted his comment on speculation that Kaur may be with the Aam Aadmi Party (AAP).
Kaur "is a daughter of this country, the daughter of a martyr", the AAP leader said. "Focus on what she said, the issues she raised."
In an obvious reference to those who attacked Kaur after she took on the RSS-affiliated ABVP, Sisodia said critics were trying to run away from the issues she raised by questioning how her army officer father died and her own political affiliations.
A student of Lady Shri Ram College, Kaur had to leave Delhi for Punjab after getting death and rape threats following her social media campaign against the Akhil Bharatiya Vidyarthi Parishad.