I don't recall such an incident. As far as I know, Zhang Ning is known to be very responsible and caring coach, at the LOG she was almost six months pregnant and still insisted on accompanying the team there for coaching instead of staying home. Perhaps, it was Wang Lin's third ACL incident and the previous two cases had caused phobia in her as she herself admitted every time she played, so ZN just wanted to make sure she's not crippled by psychological fear. Of course, if WL couldn't move she would stop and that's what happened.I used to like Zhang Ning as a coach but after the last match of Wang Lin not anymore. Wang did ruptured her knee ligament in a very severe way and she was hardly being able to stand up, but Zhang insisted that she continue the match. She tried, two times, but it naturally only got worse.
After that she was not WS head coach. Was it a coincidence or was it because she was then so irresponsible? It is probably a coincidence but the incident showed Zhang Ning is not able to communicate with the players.
Remember, ZN's relationship with Wang Yihan is very close, almost like mother and daughter.