What I think is for Chowbey, 1st priority is his status in society. His daughter comes 2nd in his priority list. He is forcing Ranbir to marry Maya because of the public humiliation he suffered due to the breaking up of Maya's 1st engagement and he doesn't want to experience the same again. In the mall it was just Maya and not his reputation at stake, so he played the role of the caring dad. However, I'm sure that if he has to choose between his honour and Maya, he will choose his honour. Remember, Maya 's mom said that if she will try to back out from the wedding, her dad is gonna kill her. Also, she referred to his harsh treatment of his sister. So, I guess, since his honour is at stake, he is prepared to get Maya married to her alleged molester.
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