Well JR this one is down the "ol dumper." Got the following reply back from the IHSAA.
The player with the red jersey is wearing an illegal uniform and must be assessed with a technical if and when she enters the game.
The player should only be allowed to wear the jersey if it does not present a confusing situation. If it could cause lots of confusion then the ruling would be to deny the player the opportunity to enter because the uniform is illegal and causes a conflict with the jerseys of the opponents.
I stand corrected!!!