@WhimsiCat: This is also what I believe, but she had things working out so far. And not by the means of power, but her cleverness. This is what made this chapter (imho) so awesome. If she now starts to throw instant death and hyper god realm spells, it'd be so cheap. Also everyone around her would notice, what knowledge she posses, on top of what she already, but hazily, showed and go, "Ah! It's her! Mama Magic is back!" So she can't do that. As such she also doesn't need that kind of huge mana pool. It only drew attention onto her, when she silently wanted to take a slip of a mana potion. She was on such a fine roll and I had the feeling she had everything under control. Had.
Imagine what happens, if you request a small flash grenade, just in case of an emergency, and your buddy slips you a very potent explosive, because it is better. What, if she wanted to infiltrate somewhere to save hostages and just wanted to restock her mana? *WHOOSHWHOOSHWOOSH* Blue Magic Smoke everywhere! Well, too bad! The hostages are dead now, Jeffrey! Well done, Jeffrey!
Looks like I love to sneerily call out Jeffrey! Don't know why...