Think Sana is highly insecure.and jealous.
A small example I noticed during the Comedy Club task. When the host was introducing Zariwala, he praised her eyes. And Sana’a immediate response was ‘Woh lenses pehnti hai’. That was not needed.
That moment stood out for me. She can not stand anyone else being praised.
Not saying that Mahira and Zariwala are not similar, but Sana has an issue with it.