On the final day of sets for Aegan, Ajith Kumar introduced her to director Venkat Prabhu, who signed her for Goa sixth months later, to appear as the love interest of Jai in the film. During the making of the film in Langkawi, the crew cited that the hotel was haunted and Piaa came out with an account of an eerie experience in her hotel room. Goa became her big break and Piaa won critical acclaim for her portrayal of Goan girl Roshini with critics citing that she looked "promising" and "endearing", while the award-winning song "Idhu Varai" was shot featuring her character. With the help of director Vijay, she was selected to portray the lead role in Siddharth Chandrasekhar's comedy Bale Pandiya alongside Vishnu, becoming her first major release as a lead heroine. The film won mixed reviews, though Piaa's role was praised with a critic from Sify citing that "Piaa is improving with every film and looks cute".
Piaa's next release was K. V. Anand's political thriller Ko, in which she portrayed Saraswathi, a journalist, alongside Jeeva, Karthika Nair and Ajmal. Prior to release Piaa has revealed that the film will be a milestone in her career, citing that she is waiting for the release of the film adamantly. The film went on to win commercial and critical acclaim, with Piaa's performance winning particular praise. A critic cited that "Piaa is outstanding in a supporting role" and that "her natural flair in comedy brings the house down", whilst other reviewers labelled her as "effective" and that "she does the part well". She has recently signed on to appear in her first Malayalam language film, Masters opposite Prithviraj.