Perhaps it's a jealous rival. Maybe in the world of this fanfiction, there's some sort of competition, like for a job or a love interest. And this rival decided to kidnap Felicity to get her out of the way.
Another possibility is that a mysterious stranger comes to her rescue. This stranger might have been secretly following her kidnapper. He or she could fight off the kidnapper and then take Felicity to a safe place. And then they help her find a new pair of glasses.
I'm not sure which specific 'Kidnapped Felicity Squints Without Glasses' fanfiction you're referring to. There could be many different interpretations and stories within that concept. Maybe it's about Felicity being kidnapped while in a situation where she's not wearing her glasses and has to rely on other senses or the help of others to escape.
In this fanfiction, Blurry without glasses might be on a quest to rescue Felicity. Their journey could be filled with obstacles not only because of the danger of the kidnappers but also because of their impaired vision. This could lead to some really intense and exciting scenes as Blurry tries to navigate and find Felicity.
Perhaps the lost glasses are not ordinary glasses at all. They could be from a different world or dimension. Felicity's kidnapping might be part of a larger plot to retrieve the glasses for some dark purpose. The fanfiction could explore how Felicity uses her wits and skills to outsmart the kidnappers and either keep the glasses safe or use them to her advantage. It could also have elements of mystery and suspense as the true nature of the glasses is gradually revealed.
In this kind of fanfiction, perhaps Felicity is kidnapped and her glasses are missing as part of some grand plot. Maybe it's a mystery where her friends have to find her and also figure out what happened to her glasses. It could be that the glasses hold some important clue or power in the story's universe.
One possible plot could be that Felicity, a smart and squinting glasses - wearing woman, is kidnapped because she has some important information. Maybe she's a scientist who has made a breakthrough discovery and some bad guys want to use it for their own gain. Her friends then start a search mission to rescue her.
If this is a fanfiction, it might explore themes of vulnerability and heroism. Felicity being kidnapped puts her in a vulnerable position. Blurry without glasses could be seen as less capable at first, but perhaps they overcome this disadvantage to rescue Felicity. It could also involve a lot of character development for both Felicity and Blurry as they face this difficult situation.
One possible plot could be that Felicity has some sort of vendetta against the person with glasses. Maybe she kidnaps them to get information. For example, if in the fanfiction's universe the person with glasses has access to some secret technology or knowledge that Felicity desperately needs for her own purposes, like to save a loved one or stop a greater evil. So she resorts to this extreme measure of kidnapping.
The character Felicity could be a complex anti - hero type. She might be someone who has been pushed to the edge by circumstances in the fanfiction world. The person with glasses could be a nerdy scientist type. They could be working on a project that Felicity believes is dangerous if it falls into the wrong hands, so she kidnaps them to either stop the project or control it herself.