Lyra was more or less under house arrest throughout her childhood. Apart from reading, playing with toys, and practicing musical instruments, she had to learn to entertain herself within her own mind. Her parents had her semblance unlocked, since having an active semblance, even if not being proficient with it, was the the thing to do for her family. At first, Lyra's semblance didn't quite manifest itself, but that's because she didn't realize that in addition to using her own aura, she had to draw aura from another source in order to use her semblance. When one of her family's servants watching over her injured herself, Lyra instinctively felt the aura available to her, if only she would reach out and take it, so to speak. Ever since then, Lyra spent the majority of her time practicing how to use to use her semblance, at rare times even tormenting her maids, forcing them to provide secondary sources of aura for her semblance to manipulate.