My DD works very fast and we use wristbands, she is on the rubber and gets the signal and goes. She was warned for not pausing looking at the catcher long enough. Is this correct since she is on the rubber and obviously looks at the catcher before pitching. She does work fast. Drives me crazy sometimes how fast she works but not sure it's illegal since she is on the rubber and lookss
Have to see it to know for sure, but from your description there is a pretty good chance she is not pausing long enough to 'simulate a signal' or whatever is required in the rule set she is working with. If she is just looking up and making eye contact with the catcher and going, then pretty good chance she is going faster than the rules stipulates (which to be fair is pretty badly defined in most rule sets).
They have been making this a point of emphasis in NFHS and NCAA games the past couple of seasons. Like a lot of 'points of emphasis', it doesn't get to a large portion of the umpires not doing 'the big games', the umpires who can't make the limited training offered and the few umpires think they are above direction who are, so it can be inconsistent which drives everyone nuts.