Survival is a common theme. The girl has to find ways to endure the harsh conditions of the West while being held captive. Another theme could be rescue, either by herself or by someone else. For example, she might use her wits to escape or wait for a hero to come to her aid.
The book 'True Grit' by Charles Portis has elements that could be related. The main character, Mattie Ross, is a young girl who goes on a journey in the Old West. While not a traditional kidnapping story, she is in a dangerous situation and has to deal with some tough characters, much like what could be expected in a story about a kidnapped girl in the west. It's a classic with a strong female protagonist.
One common theme is the struggle for survival. The kidnapped girl has to find ways to stay alive in a dangerous situation. Another theme is the fight for freedom. She tries to escape from the kidnapper's clutches. Also, there's often the theme of hope. Despite the terrifying circumstances, the girl holds on to the hope of being rescued or escaping on her own.
One main theme is usually the fight for survival. The kidnapped boy has to find ways to endure the situation, whether it's physical hardships or mental distress.
One common theme is the loss of control. When a girl is kidnapped by fairies, she loses the ability to direct her own life, like in many traditional fairy tales. For example, in 'The Stolen Child' - inspired stories, the girl is taken from her familiar human world to a strange fairy world where she has to adapt to new rules.
Isolation is also a big theme. Victims are often isolated from the outside world, which adds to the tension and horror of the situation. In 'Gone Girl', the missing woman is in a sense isolated even before the kidnapping-like situation occurs. And then there's the theme of identity. Sometimes the victim's identity can be altered or challenged during the kidnapping ordeal, as they struggle to hold on to who they are while in such a traumatic situation.
One of the main themes would be the sense of loss and fear. The kidnapped boy Eren's family would be experiencing a great deal of fear for his safety and a sense of loss as he is taken away. Another theme could be the search for justice. As the story progresses, the search for Eren would likely involve the pursuit of the kidnapper to bring them to justice.
Another theme is the impact on family. The families of the kidnapped girls are often left in a state of turmoil and despair. In 'The Lovely Bones', Susie's family is shattered by her disappearance and murder. They struggle to come to terms with their loss while trying to find justice.
Common themes include the girl's attempts to outwit the kidnapper. She might use her intelligence or knowledge to gain an advantage. For example, if she's good at technology, she could try to use any devices around to call for help. Another theme is the idea of hope. Despite being in a very bad situation, the girl holds on to hope that she will be rescued. And there's also the theme of the kidnapper's lair. The description of where she is held captive, whether it's a dirty basement, an old warehouse, or a hidden cabin in the woods, which adds to the overall atmosphere of the story.
The common themes in old west fiction are diverse. One of the most prominent is the sense of adventure. Characters are constantly facing new challenges, whether it's dealing with rough terrains, unpredictable weather, or dangerous animals. Another theme is the code of honor among the cowboys. They had their own set of rules and values that they adhered to. Also, the conflict between different groups, like ranchers and farmers, or settlers and the native population, added depth to the stories. This made for a rich tapestry of tales set in the old west.
Often, the theme of rescue is present. It could be the girl trying to rescue herself or her friends and family attempting to rescue her. Also, there can be a theme of psychological manipulation as the obsessed guy may use various tactics to control the girl.