It wasn't until the 1970s that she found her footing. Director-producers like B.R. Ishara and Feroz Khan saw something unique in her: a vulnerability that could turn into venom in a single close-up. Her breakout, however, came with the film . While the film starred Rajesh Khanna and Mumtaz, Sapna played Neena , the scheming sister-in-law. It was a role that typecast her for the next decade, but she wore that typecasting like a badge of honor.