Vladimir Nabokov. Una cuestión de honor
In the afternoon Natasha, Tanya's sister, appeared. She was so upset that she could barely speak. Anton Petrovich paced back and forth, giving little pats to the furniture. Tanya had arrived at her sister's flat in the middle of the night, in a terrible state, a state you simply could not imagine. Anton Petrovich suddenly found it strange to be saying uty" (thou) to Natasha. After all, he was no longer married to her sister.
"I shall give her a certain sum every month under certain conditions,&