Originally Posted by SanDiegoSteve

Causing the pitcher to change approach angles is not interference. It is not the same principal as used in obstruction situations, where causing a deviation of a path is a violation. If the batter made no move to prevent the pitcher from setting up for the throw, then she didn't interfere. The pitcher could have just came right in and contacted the batter out of the way, but chose to accomodate the batter by not pushing her aside. The pitcher decided to change courses, the batter did nothing to cause this.

Of course, I wasn't there, so I really don't know what the batter did or didn't do, but if she just stood there, that act alone does not constitute interference.