Getting someone's attention by lightly touching them is not the same as poking someone in the chest or grabbing their arm. No judge in his right mind would apply the statute to this case.
My point is that by touching her a second time she opened herself up to the possibility of arrest, as stupid as it was.
That said, I hope the cell phone woman gets her a$$ handed to her. In small pieces. Somehow I suspect there is a lot to be handed!