She could call her parents or guardians immediately. If they are nearby, they can take her to the nearest optician or eyewear store. They might even have her prescription on file, so getting new glasses could be a relatively quick process.
One possible fanfiction could be about a cute girl with glasses who is a brilliant student in a magical school. She uses her intelligence, along with her unique style with glasses, to solve various mysteries within the school. Maybe she discovers a hidden library where ancient spells are stored, and her glasses help her to read the faded inscriptions on the spell books.
She could be a young detective in a mystery - based fanfiction. Usually, she uses her glasses to carefully observe clues. But without them, she glares in annoyance when she misses something important. She might be on the case of a stolen artifact or solving a murder mystery, and her lack of glasses is a hindrance that makes her more irritable.
The Durarara novels often have complex characters. For example, characters like Izaya Orihara are full of contradictions. His actions are unpredictable, and his motives are often shrouded in mystery. This makes the novels very engaging.
I recommend you to read the novel " His Little Warmth." The female lead of the novel, Jiang Nuanxing, was the president of the student union, while the male lead, Cheng Mu, kept a low profile and wore glasses. There were many touching details in the story that made people feel the beauty of love. I hope you will like this novel.
Perhaps the girl without glasses has a special ability that she's not fully aware of. The kidnappers, who are part of some sort of secret organization, know about this ability. They kidnap her to study her or use her power for their own purposes. As she's held captive, she starts to discover more about this ability herself and tries to use it to escape.
Another possibility is that a mysterious character in the fanfiction world, who has a soft spot for the girl, finds her lost glasses. He then uses this as a clue to track down where she has been taken. Along the way, he discovers more about the girl's situation and the reasons behind her kidnapping.
In a fanfiction setting, the girl who tripped and lost her glasses could be a magical being in disguise. When she tripped, it could be a sign that her powers were about to be revealed. For example, she might be a fairy whose glasses were enchanted to hide her true identity. Losing them could lead to a series of adventures as she tries to retrieve them before the wrong people find out who she really is.
One possible fanfiction could be that the girl with glasses is at a party. She's had a bit too much to drink and accidentally bumps into a guy. As she looks up at him through her glasses, there's an instant spark. They start talking and she realizes she's falling in love. The story could then follow their relationship as it develops, with her drunken encounter being the start of it all.