Not satisfied with her performance in the Class XII examinations, a 17-year-old girl reportedly shot herself from the licensed revolver of her father here today.The girl identified as Simranjit Kaur, daughter of Gurdev Singh, took the extreme step when she was alone at home in the Apex Colony locality.Her father, who is into the business of sale and purchase of cars, had gone to his office, while the girl’s mother and brother went to the market.A perusal of the CCTV footage by the police from the cameras installed in the house it came to light after her mother and brother went outside the house she hit her head on the main gate of the house and then went inside and shot herself.When her mother and brother returned, they found Simran lying in a pool of blood. The revolver was also lying near her body.The girl’s parents revealed to the police that she was depressed over not scoring well in the mathematics examination. She had opted for non-medical stream.The girl’s father said he had told her that they would apply for re-evaluation of the mathematics paper, but still she went under depression.