Answer by taking a quote from the following article:

Shraddha Kapoor (born 3 March 1987) is an Indian actress and singer who works in Hindi films. The daughter of actor Shakti Kapoor, she began her acting career with a brief role in the 2010 heist film Teen Patti, and followed it with her first leading role in the teen drama Luv Ka The End (2011). Kapoor gained wide recognition for playing a singer in the commercially successful romantic drama Aashiqui 2 (2013), for which she received several accolades including a Filmfare nomination for the Best Actress. The following year, she portrayed a character based on Ophelia in Vishal Bhardwaj's critically acclaimed drama Haider (2014), an adaptation of William Shakespeare's tragedy Hamlet.

Kapoor was born and raised in Mumbai in a mixed ethnic family. On her father's side, Kapoor is of Punjabi descent, and on her mother's side, she is of Marathi ancestry. She has said that she went through a tomboyish phase as a child and described herself as having a strong attitude, because of which she was deliberately picking fights with boys. Kapoor's family members include her father Shakti Kapoor and mother Shivangi Kapoor, her elder brother Siddhanth Kapoor, her two aunts Padmini Kolhapure and Tejaswini Kolhapure. She is the great-niece of the Mangeshkar siblings: Lata, Asha, Meena, Usha and Hridaynath.  Hailing from a family of actors, Kapoor desired to become an actress since a young age. Wearing her parent's clothes, she used to rehearse film dialogues and dance to Bollywood songs in front of the mirror. She also accompanied her father to various shooting locations in her childhood. During one of David Dhawan's shoots, Kapoor befriended actor Varun Dhawan, to play with him, and they were holding a torch pretending it to be a camera while delivering film lines to each other, and they were also dancing to Govinda's film songs. Kapoor did her schooling at Jamnabai Narsee School and at the age of 15, she shifted to the American School of Bombay, where she was schoolmate with actress Athiya Shetty and actor Tiger Shroff. In an interview with The Times of India, Shetty revealed that they all used to participate in dance competitions. Believing herself to be competitive at the age of 17, Kapoor played soccer and handball as she thought these games were challenging. When interviewed by The Hindustan Times in 2016, both Kapoor and Shroff admitted that they had a crush on each other in school, but never proposed to each other. Kapoor then enrolled in Boston University to major in psychology, but subsequently left in her freshman year to appear in her debut film after she was seen on Facebook by producer Ambika Hinduja, who cast her for a role in Teen Patti. In an Interview with the Filmfare magazine, Shakti Kapoor revealed that Kapoor was barely 16 years old when she was offered her first film by Salman Khan, after he was fascinated by one of her school play performances, but Kapoor, considering herself to be studious, rejected the proposal as she was also aspiring to become a psychologist. Kapoor was trained as a singer since her childhood as her maternal grandfather and mother are classical singers. CANNOTANSWER

Why did she leave?

to appear in her debut film after she was seen on Facebook by producer Ambika Hinduja, who cast her for a role in Teen Patti.