What is significance has the man's drinking an Anis by himself before rejoining the girl at the end of the story?

They
used to have the slang term "dick smithing" to describe what the American is doing
inside the saloon. Typically a man might go into the kitchen to mix drinks for himself, his
wife, and their guests. He would pour out the drinks and then pour himself an extra jigger of
gin or whiskey and dick smith it straight down. It is obviously a kind of selfishness. There
might be several reasons why the American dick smiths an extra Anis del Toro before rejoining
the pregnant girl outside. He may just want to avoid renewing a conversation which threatens to
turn unpleasant. He may feel that she had already had enough to drink, especially since she is
pregnant. They have each drunk two large beers and one Anis del Toro. It seems pretty obvious
that she shouldn't be drinking any more in her condition. But as far as the man is concerned, he
may feel he needs an extra drink. He is a bundle of nerves. The girl is giving him a hard time.
He has all kinds of logistical problems to deal with--and he has to do so in a foreign language.
He will have to find a hotel, then make contact with an abortionist. He may only have a name or
an address. Madrid is a big city. He will have to get the girl to the abortionist and then back
to the hotel where he will have to take care of her while she recovers and in the meantime be
hoping and praying that there will be no complications. He is breaking the law. He could get
thrown in a Spanish prison. What if she dies??? He has no idea how this operation will affect
his relationship with the girl. He is trying to be more patient, understanding, affectionate,
and competent than he really feels. He delays in going outside to rejoin the pregnant girl
because she only makes him feel guilty and anxious. Their conversations are going nowhere
because of the huge, black problem hanging over their heads.