Factual error: Joan ends up taking the "wrong bus," which takes her "hell and gone from Cartagena." Its destination is labeled as "Castillo de San Felipe." However, in Colombia, Castillo de San Felipe is located inside the city of Cartagena itself.
Factual error: None of the "Colombians" speaks with a Colombian accent or uses Colombian slang.
Chosen answer: She's lost in Columbia and doesn't have access to money beyond what she has with her. She doesn't want to give him everything she has because she doesn't know when she'll be able to get more.