Dmitry Glukhovsky. Metro 2034 (№ 307137)

It's time to give Sasha something that he bought for her at the market, said Homer. It seems that she will soon come in handy.
He took from a drawer a packet, twirled it in his hands. The girl burst into the room in a few minutes - a tense, confused and angry. With feet climbed on his bed, staring into the corner. Homer waiting - the storm is or pass? Sasha said nothing, but just began to nibble her nails. Was time for decisive action.
- I have a gift for you. - The old man got up from the table and put it on a blanket beside the girl.
Why? - but she claws, not appearing out of the sink.
- Why do people give each other something?
- To pay for the good, - replied Sasha. - They have already made or about which they ask.
- Then I'll pretend I'm paying you for the good that I already did, smiled at Homer. - I've got to ask about.