Fanfiction.net could also be a good place. However, the tagging system there might not be as refined as AO3. But it still has a lot of content. Look for categories related to both Violet Parr and Young Justice and browse through the stories to find the ones that focus on their relationship.
It could be about Violet Parr joining the Young Justice team. Maybe she has to adapt to their way of doing things, and there could be a romantic subplot between her and one of the Young Justice members. For example, she might start to develop feelings for Robin as they work together on missions.
One story could be about Violet Parr using her powers to save her family from a new supervillain in the city. She might have to overcome her own insecurities while facing this threat.
Yes, there are many appropriate Violet Parr fanfics. For example, some might focus on her training to become a better superhero, her interactions with her family members in new and interesting scenarios, or her making new friends within the superhero community.
Love against all odds is a big theme. Given Violet's unique situation as a super - hero in training, there are a lot of obstacles in their relationship. But fanfiction often shows them overcoming these odds. There's also the theme of growth. Both characters grow through their relationship. Tony becomes more understanding of the extraordinary, and Violet learns how to balance her two lives better with Tony in it.
In fanfiction, the relationship between Tony Rydinger and Violet Parr can be really interesting. They might be portrayed as having a sweet, innocent teenage romance. Tony could be the one who slowly breaks down Violet's guarded nature, seeing past her powers and into her true self.
In the fanfic, they might be brought together by a mysterious figure who wants to use their combined powers for good. Violet's invisibility and force fields, combined with Raven's telekinesis and dark magic, could create some really interesting scenarios. For example, they could use their powers to create a shield around a city under attack. Their relationship could develop from mutual suspicion to a strong friendship as they discover they have more in common than they thought, like their struggles with being different from the norm in their respective worlds.
Their relationship could start with simple friendship. Tony might be initially intrigued by Violet's quiet nature and her hidden powers. As they spend more time together, they could gradually develop deeper feelings for each other.
Perhaps Violet Parr gets a strange magical ability and she is sent to Hogwarts to learn how to control it. There, she meets Harry Potter. They become friends and together they discover a mystery within the walls of Hogwarts that has something to do with both the wizarding world and the world of super - heroes. For example, a hidden chamber that holds the secrets of how super - powers and magic could be combined.
One possible plotline could be that Violet and Tony team up to solve a mystery in their town. Maybe there are strange occurrences that only Violet's powers and Tony's knowledge of the area can help figure out.