Translation of Entgleisung

The lack of political stability is not new to South America and I believe that the different views among them added up so much that conflicts are not avoidable anymore. Look for example what happened.
The short story 'Hills like white elephants' is a short story about a relationship between a man and a young girl, based on having sexual encounters. The meaning of this story is not immediately recognizable.
She started to walk with us and one could observe that she had lost some of the naivity many children have, due to the fact that she started to be a sales person long before she reached twelve.