Known for her dramatic and comedic performances in independent film and television, she made her screen debut in the comedy series !Oka Tokat.

Her breakthrough came when she played Valentina in the series Darna which led to various supporting and antagonist roles in television.

The film eventually became the highest-grossing Filipino independent film of all time, earning ₱300 million (approximately US$5.88 million) within three weeks of its release.

Due to the movie's popularity, Philippine entertainment media sources dubbed their pairing as "AlEmpoy".

[2] After her successful portrayal in Kita Kita, De Rossi has pledged not to accept antagonist roles anymore in either television and feature films.