Reset the ten second count?

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Girls JV, 2 man. B pressing in the backcourt. I am Lead and Referee opposite table in backcourt just inside division line. At approx 5 in the ten second count B1 bats ball causing interrupted dribble which is heading OOB off B1. B2, falling OOB, redirects ball back in bounds. Trail's angle is bad and lined out on this play and thinks B2 batted the ball back in bounds and keeps his count going. A1 recovers the ball and is subsequently whistled for 10 second count. From my angle I observed B2 clearly control the ball and redirect it back onto the court as she was falling OOB. I remember thinking at the time that a TO call is OK. Is there any means by which I could have signaled Trail that the girl had control and to reset his backcourt count?