A/N: As always, I don't own the Potterverse.
ukiyo - (n.) the "floating world"; a place of fleeting beauty and living in the moment, detached from the bothers of life [japanese]
Su found it much easier to meditate when there was nothing to distract her. The obvious distractions were the easiest to eliminate, thanks to the isolated nature of the room, but it wasn't until she slowly begin phasing out all the other external stimuli that she was truly able to find inner peace. After a fashion, she was even able to begin levitating while in trance, citing that the feeling of the floor against her skin was a potential distraction if left unchecked. Of course, it was much easier for her to visualize that the floor was no longer there, so when the secrets of the Room of Requirement were made known to her, she began testing just how far the Room could go.
First went the things; those necessary, bothersome objects that make a room more than a bare, empty space. With them gone, she was able to discover that she could float much higher than normal, going far beyond the foot she had achieved in her bedroom, and nearing the proscribed limit from her training book before settling into a comfortable height. She was noticeably better rested after these sessions, but her mind craved more, craved a further sense of peace beyond that which she had already discovered.
Next went the colors; lovely when used properly, but sometimes being distinguishable was more than the mind required. Now, the only way she could determine how far she levitated while in trance was by the slight drop in oxygen from the surrounding air; nothing potentially serious, but noticeable to one trying extremely hard to monitor their breathing. An utterly black room, in an utterly featureless place. The vastness of it stretched her brain beyond its fathoms, and she was delighted.
Finally, she dared attempt the most difficult part of reducing her distractions: abandoning the Lotus pose she had so easily mastered, and freeing her body to be as open as her mind. Arms and legs extended, held up by only sheer force of will, relaxed while in a state of near free-fall, with nothing to stop her but her own mind and magic. The slightest loss of concentration could prove fatal, but it was on that edge she knew that the greatest secrets and mysteries were solved. She first tested with a sturdy net of visualized Acromantula silk under her, then a net of common rope, and only then did she test the final true experiment, with no net at all.
In her mind, she found nirvana. In her peace, she found enlightenment. In her very being, she found the secret of magic.
She never meditated again. She never needed to.