No pitch if batter not ready?

[SC Ump]

You didn't specify the rules, but most of them state that they pitcher must take, or simulate taking a sign from the pitching plate before delivering her pitch. Even if she only has one pitch, she must simulate taking a sign, i.e. don't quick pitch.

Option A, which many rules specify: call an illegal pitch.

Option B, which I don't believe is kosher but makes sense to me: explain to the pitcher that if you are not ready to see the pitch, you have no option but to call it a ball.