While they were in Mumbai, Rattan Bai and Nalini's dad's cousin, Kumarsen Samarth returned from studying cinematography in Germany.
[3] In her teens, Jaywant appeared in Mehboob Khan's Bahen (1941), a film about a brother's obsessive love for his sister.
She performed in a few more movies like Gunjan directed by her husband Virendra Desai starring Balraj Sahni and Trilok Kapoor before filming Anokha Pyar (1948).
Although the leading movie magazine of the day, Filmindia, called it "politically obsolete", it enjoyed success at the box office.
She and Kumar further collaborated on films such as Jalpari (1952), Kafila (1952), Nau Bahar (1952), Saloni (1952), Lakeeren (1954), Naaz (1954), Mr. X (1957), Sheroo (1957) and Toofan Mein Pyar Kahan (1963).
Jaywant died on 22 December 2010, aged 84, at her bungalow of 60 years at Union Park, Chembur, Mumbai, India.