One reason could be that she stepped on something sticky like gum on the sidewalk. It held her shoe firmly and rather than struggle with a dirty shoe, she took it off and was stuck barefoot.
She could be barefoot because she was playing a game like hide - and - seek outdoors and got stuck in a bush while trying to hide.
She could be walking in an area with soft mud and step into a deep patch. Another reason might be that she steps into a narrow gap between rocks or in some old machinery where her feet get wedged.
Well, she could get stuck because she might be in an unkempt area like a field full of holes or a muddy patch. And as for being tickled, it could be that a friend or a sibling is around and they see her stuck situation as a chance to be playful and tickle her.
Well, first of all, she should not panic. Panicking will only make things worse. If it's a water - based glue, she could try soaking her foot in warm water for a while. This might loosen the glue's grip. She could also try rubbing a bit of butter or margarine on the glued area. These substances can sometimes act as a lubricant and help in separating the foot from the glue. And if she has access to some rubbing alcohol, that could also be used, but very carefully as it can be drying to the skin.
She could have been a victim of a prank. Some naughty kids might have hidden her shoes as a joke while she was sitting in a public square, leaving her barefoot and stuck there.
One possible ending is that she gets help from someone nearby. For example, if she's stuck in a muddy area, a person with a stick or some tool might come along and pry her foot out.
The girl could be freed by someone passing by. And as a thank - you, she offers to play a game with the person who helped her. They end up having a great time together with more tickling involved in the game. Well, in this kind of story, the tickling often leads to a more friendly and happy atmosphere. So it could also end with the girl and those around her sharing a delicious treat while still laughing about the whole stuck - and - tickle situation.
Maybe she lost her shoes. It could be that they got stolen or she accidentally left them somewhere.
Maybe she stepped on something sharp like a stone or a thorn. It could be really painful and that's why she regretted it.
There was a barefoot girl exploring an old attic. She accidentally stepped into a small hole between the floorboards and got stuck. Her sister found her and started to tickle her sides to cheer her up. The girl giggled uncontrollably. After some time, they managed to free her foot by carefully wiggling it out. It was a funny and memorable moment for both of them.