Parents are saying that the 3rd base coach and the player in the background were yelling for the runner to "run her over" (Catcher) and at that moment the runner changed her direction by 3 feet and put her arms up. The parents say the catcher heard this and defended herself.
Regardless of what was, or was not said by the 3rd base coach or the players in the background, the catcher should not be standing in the base path, even partially, when there is no play at the plate.