She was born in Rome in 1977, she soon moved to Tuscany and then returned to finish her classical studies in her native city. When she was 9 years old she made her first appearance as an actress in the film W Green and in her first play Cracks by James Purdy. At 15 she sung in the soul band The Soul Garage alongside which she performed numerous concerts in Rome and did a tour in Scotland together with the then unknown Alex Britti. In 1992 she was again an actress in the film Empoli 1921 – Films in Red and Black, both films were directed by her father Ennio Marzocchini. During this second acting experience, she realized she wanted to stay behind the camera. After finishing high school, she worked in Rome as Assistant Director, lighting and sound technician in numerous theatrical performances; she shot her first short film Uova, Amore e Sacrestia. When she was 20, she lived in Amsterdam for a year, and then moved to Spain where she worked for over 12 years as Assistant Director for cinematography. Among the international productions she took part in there are: The labyrinth of the faun by Guillermo del Toro, Moulin Rouge by Baz Luhrmann and Manolete by Menno Mejes.
She writes and directs the lesbian thematic web series El Vlog de Greta which, thanks to word of mouth, is followed on 5 continents with thousands of hits on youtube. She creates and develops various TV formats. She make various videos for the Thyssen-Bornemisza Museum in Madrid.
In 2011 she returned to live in the Tuscany countryside, where she makes videos for various street artists festivals, theatrical performances. In 2014, she made her second short film Broken Dolls of which she is the screenwriter, director and producer. In 2014 she, together with 3 other splendid artists, gave life to the surreal-musical quartet Le Lorolì. Since 2015 she has been part of Gli Scellerranti, a popular music group from central and southern Italy with interference from world music and B.A.S Special Affective Needs, a female musical theatrical duo that ironizes, sings and jokes about love and its stereotypes.