One possible storyline could be that she sacrifices herself to save her family or friends. Maybe in a battle against dark wizards, she uses a powerful spell to hold off the enemy long enough for others to escape, but it drains her life force. Another could be that she succumbs to a mysterious and incurable magical illness that has been plaguing the wizarding world. This would lead to a very sad and poignant story as her loved ones struggle to come to terms with her impending death.
One interesting storyline could be Lily Luna Potter discovering a long - forgotten magic spell in the Hogwarts library. It could lead her on an adventure to find out the origin and power of the spell, along with her friends. Maybe they face some challenges from other students who are jealous of their discovery.
One possible storyline could be them going on an adventure in the wizarding world together. They might discover a hidden magical artifact and have to protect it from dark wizards. Another could be a story about their friendship growing over time as they attend Hogwarts and face various challenges together, like dealing with difficult professors or school bullies.
One possible storyline could be Draco and Lily Luna becoming unexpected friends. Maybe they are forced to work together on a project at Hogwarts many years after the war. Draco has changed a lot since his school days, and Lily Luna is intrigued by his past and how different he is now. They start to see each other in a new light and form a bond that surprises everyone around them.
One popular storyline could be their adventures at Hogwarts. Maybe they discover a hidden chamber together. Another could be how they deal with the legacy of their famous parents. For example, they might face pressure from other students who expect them to be as great as Harry, Ginny, Ron and Hermione. And they could also have their own unique magical abilities that they explore and use to solve various mysteries around the school.
She might meet her father, Harry Potter, when he was still a student at Hogwarts. This would be an amazing encounter as she could see a side of her father she never knew before.
A possible fanfiction could involve Lily Luna Potter and her time - traveling adventures. She accidentally stumbles upon a time - turning device and gets sent back to the time of the first Wizarding War. There, she has to be careful not to disrupt the timeline while also trying to learn from the events of that time to prevent a similar future catastrophe.
One possible storyline could be that Ron sacrifices himself to save Harry during a final battle against Voldemort. His death could be a turning point for Harry, making him more determined to defeat the Dark Lord. Another idea is that Ron is poisoned by a new dark magic spell created by Death Eaters, and his death causes Hermione to go on a vengeful quest against the Dark Arts. Maybe in a different take, Ron dies trying to protect his family from a group of rogue werewolves, and his death shatters the Weasley family but also unites them in a fight for justice.
Her death would likely cause a great shockwave throughout the wizarding world. As a member of the Potter family, she represents a symbol of hope and the future. Her death could lead to a sense of despair among many wizards and witches who saw her as a continuation of the Potter legacy. It might also inspire some to take up the fight against any remaining dark forces more vigorously, in her memory.
Well, it really depends on the fanfiction author's creativity. Some might give her a Patronus that reflects her own unique personality traits. For example, if she's portrayed as very brave and fierce in a particular fanfic, her Patronus could be a lioness, representing her courage and leadership. Another possibility is that it could be a bird, perhaps a phoenix, which would tie in with the magical and powerful nature often associated with the Potter family.
A really interesting concept could be Lily Luna Potter traveling back in time. She could meet her father as a young boy at Hogwarts and have to be careful not to disrupt the timeline. It would be a great way to see how the past and present of the wizarding world interact.