I can’t remember book title?
Her younger relative (possibly brother / 1/2 brother?) came to visit or was in her care.
She gave him a glass of milk but it was too sweet and she realized it was because his family was poor and he was used to drinking powder milk which is made with water.
So she poured some out and filled the rest with water for him
Thats all I’ve got there idk thanks for any one who can help :)