Nino's illiterate though, Sonia didn't teach her anything, Nino spied on Sonia, and learned how to say the chants and memorized that.
Saying the verbal component without actually having the spell memorised doesn't do anything, though, like when V said SONIC really loud.

Well if everyone uses the dittos for that, then they might as well like it.
Yeah. It just felt a little overboard.