The 18-year-old actress is undergoing treatment in the intensive care unit of a private hospital for spine and pelvic fractures and live contusion, hospital sources said.
Swarna fell from the balcony on the night of June 19, 2013 and was in the Neuro ICU.
The actress, recovering from fever since the past few days, was with her mother at the flat when the incident occurred. According to family sources, Swarna felt dizzy and fell off the balcony.
Swarna came to the limelight after participating in dance reality shows on various television channels.
She will feature in the film Buddy, the shooting of which is in progress here. The young actor has also essayed roles in a few other films, including Pranayakadha, Flat and was to act in two Tamil films.
Police said they have not yet registered a case in connection with the incident.