No, we can’t. It isn’t ours any more
The world is not theirs anymore now, if they consider to keep the baby. They will not be free to travel around the world and to live the life they are used to live - if they keep the baby, they will have a huge responsibility and they will be forced to take care of the baby.
“And if I do it you’ll be happy and things will be like they were and you’ll love me?
This quote shows that she is kind of sceptical about having an abortion - she needs it to be confirmed that everything is going to be like they were after the abortion. "...and you'll love me?" (if she gets the abortion) - this indicates that she is afraid that he will not love her, if she wants to keep the baby
white elephants,
White symbolizes innocence and pureness, which is often connected with children. The white elephants could therefore symbolize the baby.
“The other way from you,” Tom told him.
Tom was rude, and said: "The other way from you", in an arrogant voice. He walked away without looking back, annoyed with everyone at the station.