She can go down the hole as far as she wants. I am not big into apps and what not, but I found most free EQ programs were lacking, either adding too much distortion, using too many resources or an annoying feature that tries to get money out of you. It's been a few years since I have tried them, so maybe it is different now.Haha! Dat funny! Gotta save that image and send it to some of my “into audio” friends. :-)
APO actually does everything I’d want out of a graphic equalizer app, except band-to-band smoothing (when desired). There are weird artifacts with high gain on the eq bands, but I (and I’m guessing my daughter) would never push them that high anyway. 20 dB of gain @ 8kHz? EEEEYOWWW!
Anyway, yeah, APO certainly doesn’t look to do parametric, at least not on its own.
Of note, messing around with even a paragraphic eq would teach my daughter a lot about identifying frequency response aberrations. :-)