if this went down the way you claim you were 100% in the right and as a coach myself it is inappropriate to interrupt a team activity . . .I applaud you on your effort and conduct. As for the lady if she did all that and then reported you she is loon, crazier than a **** house rat looking for attention or some type of pay day etc.
And contact the parent present and ask if they can do the same. provide you with thier written observations. Also inform them to do what I recommended you do. No emotion, no conclusions, just facts.
If my post offends you, I deeply Apple-O-Jize.
If she is as bad as you described, invite her to a meeting with the city and let her talk. They'll quickly understand the problem.
As for the crybabies in this thread that swear "this is how it is in the U.S. now", please... get a grip, nobody sane considers that acceptable behavior or "PC".
Horse sense is the thing a horse has which keeps it from betting on people. ~W.C. Fields