"Hime-cut Dara-san" and "Grizzled Old Lady Dara-san" are my favorites... Dara-san is such a sore loser that she will begrudgingly improve skills she doesn't like just to show off XD.
Love the explanation of how "magic" works, well... a part of how magic works, her explanation leaves it open that not everything is entirely understood, and many aspects of the practice are at the same time intuitive and hard to explain.
Her explanation describes the "magic" she practices like it is computer programming, but... exactly like that, there are certain parts of the "spaghetti code" that simply work, but no one knows why or how.