Perhaps she has uncovered a big secret in a corporate or political conspiracy. The people behind the conspiracy don't want her to expose them, so they tie and gag her on her tiptoes to keep her silent. They may be planning to move her to a more secluded place later to deal with her more permanently, but she might be rescued by an unexpected hero who stumbles upon the situation.
In a more action - adventure context, perhaps the girl is a spy who has been captured by the enemy. The tying and gagging on tiptoes is a form of torture or interrogation technique. But she is a strong - willed character, and she uses her wits and any available resources around her to outsmart her captors and escape.
Let's say in a fictional adventure story. The girl who is tied and gagged on her tiptoes is in a strange land. She was exploring an ancient temple when she was captured by some sort of cult - like group. They tied her up in this way as part of their strange rituals. But she is a brave girl. She manages to free herself a little bit and leaves clues for her friends who are also adventurers. They then follow the clues and come to her rescue, and together they defeat the cult - like group.
Perhaps it's part of a prank that has gone too far. Some irresponsible people might think it's funny to play such a cruel 'joke' on her without realizing the seriousness of their actions. However, this is still a very wrong and illegal behavior.
No. It could be a consensual part of a performance art piece. The girl might be an artist expressing a certain concept through this extreme physical state, like the idea of restraint and the struggle for freedom in a symbolic way.
In a very imaginative story, there could be a magical or supernatural element. A soccer girl might have unknowingly entered a forbidden area on the soccer field that is protected by some magical creatures. These creatures don't understand human ways and see her as a threat, so they tie her up and use a sock to gag her to keep her from making noise that might attract other humans.
It could be a story about a girl who is in some kind of distress. Maybe she's been captured by villains and they tie her on her tiptoes as a cruel form of restraint. It might be a thriller - style story where she has to find a way to escape this situation.
One reason could be that the reader has stumbled upon a secret. For example, if the story is set in a world of spies, the reader might have accidentally overheard some top - secret information and the villains want to keep him quiet.
In a horror - themed story, it might be related to a serial killer. The killer ties and gags the girl to subdue her before carrying out his evil plans. The muffled screams add to the sense of horror and helplessness, making the situation extremely terrifying for the victim.
Perhaps it's a mystery story. The girl is found tied at her tiptoes in an abandoned building. Detectives start to investigate, and they find out that she was kidnapped by a criminal who was trying to send a message to someone. As they dig deeper, they discover a web of secrets and lies that led to this strange situation.
One possible plot could be a mystery thriller. The girl is tied and gagged during a webcam session, and it's part of a ransom situation where the kidnappers are using the webcam to send messages to her family for money. Another could be in a horror context, where she is a victim of a deranged person who likes to terrify his victims on webcam.