It's hurtful to cancel your child's visit with her parent.
Kitty lives with her mother who divorced with Kitty's father and one day Kitty doesn't do her Math homework properly.
Kitty's mother wants to punish her.
Kitty's mother asks her to do two more pages of practice in the Math book.
Kitty's mother does not let her see her father on the weekend.
Kitty feels obliged, carefully works through the practice and gets a better understanding of the Math concepts.
Kitty feels sad and misses her father so much.