One reason could be getting caught in old furniture. For example, in an old house, she might step into a broken dresser drawer and her feet get stuck. And the rough edges or the things inside like old cloth scraps can tickle her feet. Another reason is natural elements. If she steps into a patch of thick mud during a walk in the forest, her feet get stuck and small water insects or twigs might touch her feet and make them ticklish.
There was a girl who went hiking. She put her feet into a muddy patch that was actually a bit of a quicksand - like area. Her feet got stuck. As she was trying to pull them out, a little bug crawled on her foot, which made it ticklish. She managed to free her feet with the help of a passer - by after much laughter and struggle.
Probably she called for help. Someone could have carefully peeled the glued part away from the surface her feet were stuck to. It would have been a very delicate process to avoid hurting her.
In a story, a girl was in an old, abandoned building. She was curious and exploring. There was a broken staircase. When she stepped on one of the steps, it gave way and her feet got stuck between the broken pieces. She was a bit panicked at first, but then she managed to stay calm and used her hands to shift the debris around her feet until she could get them out.
There might be a story where a girl was in a DIY workshop. She walked into an area where glue had leaked from a container. Her feet became stuck as she wasn't paying attention. After some struggle and using a solvent to dissolve the glue a bit, she managed to get her feet out with the help of others.
In a garden, a girl might be running after a butterfly. She could step into a muddy patch where her feet get stuck. Then, a little bug might land on her foot, and as it moves around, it tickles her. This can be a fun and unexpected situation for the girl.
Maybe she's climbing a tree and her feet get stuck between branches. A bird might land near her feet and its feathers tickle her. For example, she reaches for a higher branch, slips a bit and her feet wedge in. The bird lands to check out the commotion.
One story could be that a girl was exploring an old attic. Her feet got stuck between some loose floorboards. As she tried to free them, a little mouse scurried by and tickled her feet, making her giggle nervously while still being a bit scared.
There was a girl who went for a walk in the forest. Her feet got stuck in the mud near a small stream. A curious squirrel climbed down a tree and accidentally brushed against her feet while looking for nuts, tickling her. She laughed despite her feet being stuck.
No, these types of stories are not appropriate or ethical. Tickle torture, even in a fictional context, implies a form of non - consensual discomfort or harm, and it is not something that should be promoted or entertained.