Watashi, Nouryoku wa Heikinchi de tte Itta yo ne! Lily no Kiseki

You love the light novels, manga, spin-off, and anime...now get ready for a self-contained novel about Lily!
Born deaf, nine-year-old Lily was hidden away from the world by her margrave father. But her life changes forever when the fabled adventuring party known as the Crimson Vow saves her home from a bandit attack. Lily emerges from the encounter with her hearing miraculously restored, the ability to converse with nanomachines, and the power of magic! Taking only her attendant, Lafine, with her, she sets out to seek adventure in the great wide world. Let the Legend of Lily Lockwood begin!
(Source: Seven Seas)