I've been kicked out of many places for taking photos... although they have all been private. Often times it depends on who is the guard at the time as to whether they will care or not.
Maybe you should have taken her picture in front of the skyway bridge?
When I've run into these situations (used to do photos for a semi-living), provided the other person wasn't armed or a cop, I would take THEIR picture. Always unnerved them enough that while they were trying to figure what to do, I'd make my escape.
