This is crap. If I was a ball boy or a lines judge and one of the all time great tennis players accidentally hit me with a ball, I would be the happiest person alive.
Those people who work there do it for free and see it as a huge honor.
If an all time great hit me (assuming it wasn't serious, which this isn't), I would be so excited as not only would the player actually pay 2 sheets about me, which they otherwise wouldn't, but I would have hopped right back up and said, no worries, I am not flopper. Let's win this tourney!
I would have loved to be given the opportunity to save an all time greats tennis players chance at winning a major by telling everyone, ,no harm no foul.
But this woman, no fault of her own, was probably more shocked than anything.
So by the rules, it is fair, but it is was me, very foul! How many times in your life will you get to save a great players chance at making history. NEVER!