What do you do when you feel that a punishment given to your child by his mother is too harsh for what he actually did? Would you let him out of it and risk undermining his mother's authority over him or would you go along with it? For me, I would try and convince her to lighten the sentence (Being five minutes late does not warrant being grounded for a month) or if it's a really severe punishment, actually tell her off (For example, she beats him with a belt for not cleaning his plate). What would you do?