Fight

"If you are going to judge me due to my anger then that is quite unfair to me, I am not only my anger but also my kindness, my care & my love. No one can define me with my only one emotion"-Sia.

... 

Sia is too sad and angry that she decided to leave, she needs to calm down, so she stands up and run towards her room, Udhav know that he messes up, he hadn't wanted to tell her, but he thinks he needed to say sorry to his second wife, and maybe if he confesses to Sia then his wife might forgive him, but in this process, he again hearts his daughter.

 He wanted to tell her that she is too valuable for him, without Sia he might not overcome from his depression, unlike his Son she is too clingy, and depend on him, her deepness makes him feel unwilling to leave this world, he is alive today due to his daughter, he can stand for her temper but not for her silence, he wanted to go and tell her, but he is frozen at the place.