Officials say Heather Bresette of Overland Park, Kansas, was released Saturday from UAB Hospital.
Bresette had been treated there since a steel cabinet holding video monitors fell on her family at the newly renovated Birmingham airport on March 22.
The accident killed her 10-year-old son Luke and injured two other sons.
The family was returning home to Kansas following a beach trip to the Destin in the Florida Panhandle at the time of the accident.
The monitor that fell was installed as part of a $201 million upgrade of the Birmingham-Shuttlesworth International Airport.