DD2 started pitching 11 weeks ago.
Others may feel differently, but 11 weeks into learning to pitch... I wouldn't really worry too much about accuracy. Throw 'em all down the middle and let her innate in-accuracy put them on the corners.
When throwing down the middle starts turning into actual "down the middle" pitches due to consistent good form and habits, then start putting the glove in other quadrants.
That said, aiming for targets keeps practice more interesting so is definitely of value! Just don't judge her too harshly on accuracy since she's only 11 weeks into learning something new. Girls overly concerned about placing the ball often develop really bad form from what I've seen.