Very dynamic

After reading the chapter "Sweetheart of the Song Tra Bong", I came across reading about a character who is about as dynamic as it gets. Her name is Mary Anne and she is a girlfriend of a soldier who works at a emergency care place for the wounded. He smuggled her to Vietnam so they could be together, and ther changes that she goes through are enormous. When she arrives, she is an innocent, curious girl who has lived in a civilized society all her life. However, by the end of the chapter, she turns into a girl that is described as this: "At the girl's throat was a necklace of human tongues." To me, this is enough to show how dynamic of a character she is. I think the way the author uses this, however, is very effective. He is able to display how easily Vietnam can change a person from being civilized to almost an animal. In just 3 weeks, that is what she became.