Look back at a time where you really screwed things up, but you learned something
then basically just tell them a time where you screwed up and survived
(you could just take the time that you messed up and make up a lesson you learned, you don't actually have to learn it, it just has to sound believable)
Rukmani feels especially saddened by Old Granny's death because she would have been able to help her.
Old Granny died of starvation and because Rukmani was busy trying to solve her own family's trouble, she was not able to help Old Granny. She even accepted Old Granny's last Rupee as a gift for her grandchild, not thinking that Old Granny needed the Rupee more to buy herself some food.
Comedy probably, that's the best