The film is set in the late 1970's, yet the referees shown are wearing the gold jerseys that are standard today. Then, referees typically wore solid black jerseys with white cuffs and collars. Socks most frequently matched with a solid white top, rather than the three-striped sock. Referee jerseys changed in the 1990s to a fuchsia and black check pattern, and since around 2000 have changed to gold with black pin-striping as seen in the film.
When Gracie took the free kick her ball hit the cross bar and went out of bounds. The coach told her to get her head in the game and to get ready for the corner kick. In that situation Gracie's team was on the offensive and the ball was never touched by the opposing team. The call should have been a goal kick.