Another plot twist could be that the reason she was kidnapped without her glasses was a very specific one. Maybe the kidnapper was trying to get access to some information that was only accessible to Felicity when she wasn't wearing her glasses. This could be some sort of high - tech security measure where her glasses had a tracking device or some other safeguard, and the kidnapper knew this and planned accordingly.
In this fanfiction scenario, the loss of her glasses during the kidnapping could lead to an unexpected alliance. Felicity, without her glasses and in a vulnerable state, meets another captive who helps her. Together, they figure out a way to escape. And when she is finally free, she discovers that the whole incident was related to a corporate espionage plot where her glasses were a key piece of evidence or a target because of some unique design or data they held.
A plot twist could be that the place where the character is kidnapped has some hidden objects or clues that can only be found without glasses. For example, there might be a hidden message written in a way that is visible only to blurry vision. Also, the character might be kidnapped by someone they thought was a friend, and without their glasses, they initially mistake the kidnapper for someone else, which adds to the mystery and confusion. When they finally realize who it is, it's a big shock.
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.
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 twist could be that without his glasses, Harry has a hard time recognizing his captors. It might turn out that they are people he thought he could trust, like some seemingly friendly Hufflepuffs who are actually under the Imperius Curse. This would add an element of betrayal and confusion to the story.
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.
One possible plot twist could be that without his glasses, Harry has trouble recognizing his captors or his surroundings clearly. This could lead to some miscommunications or misunderstandings. For example, he might mistake a friendly wizard trying to rescue him for another captor. Another twist could be that the kidnappers took his glasses to specifically weaken him, as he is so used to seeing the magical world clearly with them. They could be using it as a psychological tactic to make him feel more vulnerable and off - balance.
It could be a jealous rival. Maybe someone who is envious of Felicity's intelligence or her relationships. Without her glasses, this person might think she's more vulnerable and easier to manipulate or hold hostage to get what they want.
The theme of adaptation might also be present. She has to adapt to the situation without her normal means of seeing clearly, and this could lead to her growth as a character.