Chinna vadu's class 10 results are out and his anna has opinions on every mark

Younger one got his class 10 results last month. Decent marks, he's happy, I'm happy. Problem is his anna, who wrote his own boards last year and has been comparing subject by subject ever since. 'Science lo naaku inka ekkuva vachindi' at every dinner. Funny the first week. Now the little one finishes eating fast and leaves the table. Most evenings it's just me and the two of them, so there's no one else to change the mood. Anyone dealt with an elder sibling turning results into a scoreboard? Elder one starts class 12 in two weeks and I'd like this sorted before he's the one being compared.