Legal pitch?

[kchamp]

Fed game (but I'd like to hear from the other leagues).

The pitcher has been delivering her pitches using the windmill technique. Now she pitches a change-up that's very deceptive. Normally the ball is released to the batter immediatly after the free foot strides and plants. Here the ball is released to the batter early in the free foot stride, well before the free foot plant. The pitcher then continues her windmill like normal (but ofcourse the ball is already gone).

Has she committed an illegal pitch or does it fall within the rules?

Kent