In a statement provided by the pilot, she stated that the touchdown was on-speed and she made a three point landing. During roll-out the airplane seemed to weathervane to the right side of the runway so the pilot applied left rudder. The airplane veered to the left and departed the paved runway at a slow speed. When exiting the runway the right main landing gear collapsed, which resulted in the right wing contacting the ground and causing substantial damage to the wing structure. The pilot reported no preimpact mechanical malfunctions with the airplane that would have precluded normal operation.