What Mira had just taken out of her Storage Space was an herb Aelina gave her when she informed her about the Infinity Garden. Not just any herb, but a Divine Grade herb!
After sitting in the Infinity Garden for a while, all the resources Aelina gave her have matured and reproduced. The same goes for the Divine Grade herbs.
Usually, Mira wouldn't hand over something so precious as a thank-you gift, but Ryuu had really helped her out this time. If it weren't for him, she doubted she'd be able to get herself under control within a week. Thus, she would've ended up turning into a crazed, murderous demon who would kill anything that moved before eventually getting put down by someone much stronger than her.
So, it was safe to say that Ryuu not only saved her life, along with countless others, but also helped her improve her control over her mind and body.
Still, Mira wouldn't willingly hand over a Divine Grade herb for no reason if it was just that.
