[6] In October 2015,[6] Mirnaa accepted to play the female lead in the Tamil film Nedunalvaadai, taking the screen name Athira Santhosh.

[7][8] She alleged that she was harassed and tortured by its director Selvakannan and that she took the decision to end her life when she received no support from the police or the film authorities.

Although the film opened to negative reviews, her performance won her appreciation, with The Times of India writing "Adhiti is expressive and is a promising find".

[2] She debuted in the Malayalam and Telugu film industry with Big Brother that starred Mohanlal and Aadi Saikumar's Crazy Fellow (2022), respectively.

[25] Her biggest project to date, Jailer, which featured her as the daughter-in-law to Rajinikanth's character, fetched positive reviews from critics and went on to become one of Tamil cinema's highest-grossers of all time.