Career:
* Ravenclaw Prefect: Luna is a brilliant and unique student, so it's likely she was a Ravenclaw Prefect in her final year at Hogwarts.
* Possible Career in the Ministry: Luna's father, Xenophilius, works at the Ministry of Magic, and she could have followed in his footsteps. While it's not a direct statement from Rowling, it makes sense that Luna would be drawn to a career that promotes her unconventional thinking and interest in the magical world.
* Possibly working with Fantastic Beasts: Luna's fascination with magical creatures suggests she might have become a researcher or conservationist of sorts. The Ministry of Magic has a department dedicated to the care of Fantastic Beasts, and Luna's knowledge could have been valuable there.
Personal Life:
* Marriage: Rowling has confirmed that Luna married Rolf Scamander, grandson of Newt Scamander, the famous Magizoologist. This indicates a likely path towards a career with Fantastic Beasts for Luna, or a shared passion with Rolf for the magical world.
* Family: Rolf and Luna have two children, Lorcan and Lysander. The names themselves suggest a connection to the magic and history of their families.
* Continued Exploration: Luna likely continued her life full of wonder and curiosity. Her personality is one that thrives on exploring the unknown, so it's reasonable to believe she continued to seek out the unusual and embrace the magical world with her own unique perspective.
Overall:
While we don't have specific details, it's safe to assume Luna Lovegood continued to be a remarkable woman, embracing her individuality, pursuing her passions, and finding joy in the magic that surrounded her.
It's important to remember that this is speculation based on clues and hints. Rowling has never explicitly stated what happened to Luna, so it's ultimately up to each reader to imagine her own path for this beloved character.