how I was always annoyed by this blunder, where Galina Sergeevna says that "Dasha switched from judo to algebra," although it's about Zhenya. I don't understand how they didn't see it.
Zhenya is giving up judo. Zhenya's energy directed at her family members is beginning to seriously bother everyone. To help his Wife, Dad has to fight with her coach. Beaten but undefeated, Dad helps his Wife get back into the big sport.
I know by myself that it is common to confuse names in a large family