As you've probably figured out, Fiorella is a serial self-improver. Why else did she have the facelift? Why else is she working with a voice pathologist? Why else did she sign up for physical therapy to treat kyphosis? Why else does she play the piano every day?
Which cleverly introduces her latest project--improving her attitude while tickling the ivories. Fio's already admitted to you that she's a lousy pianist, but what she hasn't told you is that she browbeats herself the entire time she's playing, as if excoriation will make her fingers function better. It doesn't, so she's trying to concentrate on the music more and not herself--visualizing people dancing to the minuet she's stumbling through, for instance.
She may not be playing any better, but she sure feels better when she gets up from the piano.