Maybe Agent Vasquez is investigating something that leads her to cross paths with Alex Danvers. It turns out that they are both after the same villain, but from different angles. They initially compete to catch the bad guy first. Along the way, they discover some secrets about each other's pasts that make them see each other in a new light. This newfound understanding blossoms into a romantic relationship as they team up to take down the common enemy.
A possible plot could be that they are forced to work together on a top - secret mission. They start off not getting along because of their different working styles. Alex is used to the more hands - on, in - the - field approach of the DEO, while Agent Vasquez has a more by - the - book, bureaucratic style from her agency. But as the mission progresses, they begin to understand and respect each other, and eventually, they develop feelings for one another.
You can try fanfiction websites like Archive of Our Own (AO3). It has a vast collection of fanfics, and you can search for 'Alex Danvers and Agent Vasquez' in the search bar. There might also be some on FanFiction.net, but AO3 usually has a wider range of works, especially for less common pairings like this one.
One possible plotline could be that they meet in a dangerous situation. For example, they could be caught in the middle of an alien invasion in their city. Alex, with her military and superhero experience, and Irma, perhaps having some unique skills of her own, team up to fight the invaders. Along the way, they start to develop feelings for each other as they rely on each other for survival.
A good 'Alex Danvers and Kara Danvers Fanfic' has to capture their unique relationship. Since they are sisters, it should show the love, bickering, and support that comes with that. For example, if it has a scene where Alex is training Kara and is tough on her but also encourages her, that's great.
One possible plot could be that they start off as colleagues who initially clash due to their different personalities. Alex is more reserved and duty - bound, while Cat is bold and outspoken. But as they work together on various projects in the media world related to superheroes, they gradually start to see the good in each other. A crisis, perhaps a media smear campaign against the superheroes that Alex is associated with, brings them closer. They realize they have common goals in terms of truth - telling and justice. As they fight against this, their relationship deepens and they eventually fall in love and decide to get married. It could also involve their friends and family's reactions, like Kara being super excited for Alex and Cat's mother having some reservations at first but then coming around.
One possible plot could be that on Earth X, Sara Lance and Alex Danvers are forced to team up against a common enemy. Maybe a powerful dictator has risen on Earth X and they are the only ones with the skills and courage to oppose. Sara's combat skills and time - traveling experiences combined with Alex's scientific knowledge and super strength could make for an interesting dynamic.
One possible theme could be the struggle with inner demons. Alex and Kara, despite their superhuman abilities, may have internal battles that lead to self - harm as a manifestation of their pain.
I'd recommend 'The Danvers Sisters' Journey'. It focuses on their growth as individuals and as sisters. It has some really heartwarming moments, like when they have late - night talks and share their deepest fears. It also shows how they deal with the villains in their own unique ways, all while strengthening their relationship.
One key element could be the origin of their PTSD. For example, it could be from a major battle against a powerful villain where they both faced near - death experiences or witnessed the death of someone close. Another element would be their different ways of coping. Kara, with her superpowers, might feel an added pressure to always be in control and protect everyone, so when she fails, it hits her hard. Alex, as a human in a world of super - beings, might have a sense of inferiority that gets exacerbated by the PTSD. The third element could be their support system. Their friends at the DEO and family members like Eliza could play important roles in their recovery.
One possible fanfic could focus on a mission gone wrong that leads to both Alex and Kara experiencing PTSD. In the story, they might initially try to hide their symptoms from each other. Kara could be having nightmares about not being able to save the people she loves during the mission, while Alex might be jumpy and overly vigilant. As the story progresses, they finally open up to each other and start to heal together, perhaps through some shared training sessions that also double as therapy, where they learn to trust themselves and each other again.
One possible plotline is that her second love is a person she meets during a mission. They get stuck together in a dangerous situation and have to rely on each other. This shared experience sparks an attraction that develops into love over time.