Ms. Maria had done an accidental act for which she apologised and the ball boy was okay with no serious hurt. So why did the officials make a big incident of this? It is true some senior players often get off for their rude behaviours on court
Some officials are trigger happy. From the reports, it looks as if she is innocent. After all, the players never have a complaint about the ball boys- if at all, it is the referee and the linesmen.