Just let her ride. Traffic refers to the environment of drivers. This includes physical, social, and psychological dimensions. The traffic environment can be viewed as a social-psychological field containing strong and weak forces that influence and determine the behavior and state of drivers. Psychological forces acting on drivers include their moment to moment interpretation of traffic situations and events.
Drivers use various signals to show their driving intentions.
Some of these are official such as the turn signal. Other signals are read by interpersonal inference, as when drivers at a four-way stop crossing wave or nod, or merely exchange glances to determine who will go first. Driving in traffic routinely involves events and incidents. Events are normal sequential maneuvers such as stopping for the light, changing lanes, or putting on the brakes. Incidents are frequent but abnormal events.