No wonder the coach loves the mother, she's the best woman in the manga. Thicc, beautiful, smart, brings home the bacon, kindhearted even to ungrateful kouhai, and is the bowling ace with a clutch factor to boot.
Meanwhile the daughter is whiny, inconsiderate to her mother, less hot, dense as a bowling ball to her cute gyaru friend's feelings, and can't bowl good when it actually matters because of shyness.
No contest.