Another possibility is that she uses this time alone to reflect on her relationship with her family. She could come up with new ways to communicate and bond with them. Since she's always felt a bit like an outcast, this isolation might give her the clarity she needs to better understand how she fits into the family dynamic.
It could be someone who is jealous of Mirabel's potential. Maybe a relative who feels that Mirabel's new - found importance in the family (even if she doesn't fully realize it yet) threatens their own status. For instance, a cousin who was once favored but now sees Mirabel as a threat.
She could run into some trouble. Since she's on her own, she might get lost in the jungle outside the Encanto. Without the protection of the family's magic, she has to fend for herself. But this could also be a chance for her to grow stronger. She might find a small village where she starts to learn new skills, like farming or making clothes. Eventually, she could return to the Encanto with a new perspective and newfound abilities.
Maybe she feels left out in the family. In the Encanto story, Mirabel is the odd one out not having a special gift. This could make her feel so alone and unwanted that she decides to run away.
The younger characters in Encanto like Antonio would be excited. He loves stories and new ideas, so Mirabel fanfiction would be like a new adventure for him. He might want to share it with his animal friends. And Dolores, with her ability to hear everything, might already know about the fanfiction. She could be either intrigued or a bit worried depending on how the fanfiction is being received by the rest of the village. If it's causing a stir, she might be concerned about the family's reputation, but if it's positive, she would likely be quietly supportive.
She could go to the mountains. The high peaks are often seen as a place of solitude and mystery in many stories. There, she might find a cave where she can hide and think about her life. It could also be a place where she discovers some long - forgotten magic that has been dormant for ages.
Perhaps Abuela believes that Mirabel's presence without a gift is somehow jinxing the family's magic. In the fanfiction, she might think that by imprisoning Mirabel, she can stop the negative effects she thinks Mirabel is causing. This could be related to some superstitious beliefs within the Encanto about the balance of magic and the role of each family member.
Mirabel could use her wits. Since she has a strong will and determination, she might find a weak point in the place of imprisonment. For example, if it's a locked room, she could search for a hidden key or figure out how to pick the lock.
Well, one possibility is that Ash wakes up with all the powers of Mew. He could then use these powers to quickly become the best Pokémon trainer ever. He might be able to communicate telepathically with all Pokémon, understand their needs and desires instantly, and use his newfound psychic abilities to battle more effectively. For example, he could levitate his Pokémon during battles, giving them an unexpected advantage.
Well, Draco standing up to his parents could lead to a lot of internal family drama. His parents might be shocked and try to bring him back into the fold. But Draco, being determined, could resist. He might leave his family home and start a new life on his own. He could also use his knowledge of the dark arts that he learned from his family in a more positive way, to fight against the real evil in the wizarding world.
Well, she could be rescued by her team. They might use their skills and resources to track her down. Maybe Gibbs would lead the way with his gut instincts. They'd probably have to face some tough adversaries along the way.