At the initiation of the takeoff roll following a touch-and-go landing, the student pilot added full power, but before she could rotate for takeoff, she experienced “…a hard time controlling the airplane on the ground.” She aborted her takeoff, but was unable to keep the airplane from departing the side of the runway, where it impacted a distance remaining sign. During the collision, one of the main landing gear separated. An inspection did not reveal any anomalies with the nosewheel steering or rudder systems.
