She got in his face and very angrily denounced his faith and he started videotaping the confrontation.
A park ranger tried to get her to calm down which, it seems, irritated her even more. That's when she struck him with her umbrella and then splashed coffee from her paper cup on him.
She says she did it because she is a Christian and he was praying to Satan.
The DA is considering charging her with simple assault and possibly committing a hate crime.