Question

When he saw that Mini was not amused, he added, “I would have hit the father-in-law, but how can I? My hands are tied." a Why was Mini not amused?​

Answer 1

Mini was not amuses because she knew that a person under arrest cannot do certain things. Here, since Kabuliwala told the police father in law which means that according to rules of an arrested person, one cannot hit back the police.

Hope it helps.