The scarred image of a betrayed mother remains within the broken and murdered Rishu's soul..and that reflects in everything. The sudden defense in giving all this food to the beggars ..to crush and belittle the emotions of a woman he wishes he never felt for...though the indication of giving it to the poor..in a practical sense is a good thing..but that superficial "goodness" was used as a weapon to hit someone's feelings..a classic , broken man-child's master stroke.
RK's scarred image of a mother reflects in every action he does...he is unaware of Padmini and Shamsher's platonic relationship and believes such women in broken families to be just like his mother..when he is belittling Padmini..like you said..that actually he is taking the revenge upon his mother by humiliating a woman who is a reflection of the apparent "mistake" Radha ji made...it was an avenging displacement..this was not about Padmini at all..it was about Radhaji and his pain and feeling of betrayal from his mom..the fact that Padmini left her husband and lives with a man is enough for him to overlook any other detail..Madhu's external structure of her family reminds him of his..no wonder yesterday he told her that there is no point purchasing emotions on families..in the end..it just kills you...Women like Padmini..for him are a reflection of his mom's "betrayal"..and he avenges that betrayal by bullying them like an insecure and loveless child does. His rage at Madhu not reacting on giving him a pedicure and warning her that he'll always remain a wolf..makes me feel that Madhu will fall first..he warns her that he is a statutory warning...what was the need of that apparent warning for no sympathy or feeling? cause somewhere he felt..and somewhere Madhu knows it is developing..i can see her falling first..but i just hope she doesn't show it until RK doesn't melt...If he wears the face of dark humour..Madhu wears the face of innocent courage...its not a fire and firefly or a flower and rock on the journey of falling in love..its two different equally seething forces blaring at each other that produces a whirlpool of emotions in between them. Only innocent courage can challenge the naughty glinting mock image of Rishu's face..and it will. This is just the beginning.