Sub for player with blood

I always present the coach with the two options and let them decide. Yesterday we were in the last couple minutes of a close game. I spotted some blood on one of the teams best player, and sent her to her bench. I was Trail opposite the table and her bench was on the other end of the court. The player went over and they got a towel and started to clean the blood. I could tell they were gonna send her back out, and Center wasn't stepping up so I went over there and informed the coach that she needed to take a timeout to keep the player in the game. She took the timeout. Thanks C.