Mehta began her career with theatre shows. During her three years in college in Delhi, she performed in several theatrical productions. Later, she was selected for the supporting role in Zee TV's 2009 television programme 12/24 Karol Bagh. In it, she appeared opposite Ravi Dubey in the role of Neetu Sethi, an effervescent young woman. The show tells the story of four children, Simi, Anuj, Neetu and Mili, of the Sethi family, which lives in the middle-class locality of Karol Bagh in Delhi. Neetu is the third sibling out of the four, who is married to the mentally challenged Omi (played by Ravi Dubey). In an interview with The Hindu, Mehta said that she gained the role by accident: "My friends and I from the theatre club were asked by one of our professors to audition for the role and I landed Neetu's part".
