>>5918087As a reminder, you *are* punching up against a more powerful magic user. Shadenfreude has immense magic potential, which is comparable to Dusk and even Mammona, which is two tiers higher than you.
Of course, higher potential isn't the only factor, the glowie woman was also one level higher than you, and you wiped the floor with her, you also have K.I.S.A to even the odds, which in terms of raw firepower has proven to beat high potential magic users by itself.
Also, if you were wondering, killing her would instantly make you level up to high potential, and would put you relatively close to the immense potential requirement.