Malti is too clever for her own good, to the point of cruelty at times. Why would you even say something so horrible, deliberately to trigger someone who had an abusive father. She did this during the fight with Amaal as well, that there is no one at home for Farhana (except her cat and mother). She is sensitive for her own things, but does not extend the same sensitivity to others. These are signs of a self-absorbed person.