Born in São Paulo, Brazil, in 1964. Muylaert studied film in the School of Communication and Arts at USP. She participated in the creation of television shows such as Mundo da Lua, Castelo Rá-Tim-Bum, Disney Club and Um Menino Muito Maluquinho. As a screenwriter, she worked on television series such as Filhos do Carnaval and Alice. She directed multiple short films, such as Rock Paulista (1988, 12th Mostra) and A Origem dos Bebês Segundo Kiki Cavalcanti (1996). She made the feature films Durval Records (2002, 26th Mostra), Smoke Gets in Your Eyes (2009), Collect Call (2012, 36th Mostra), The Second Mother (2015), awarded at Berlin and Sundance film festivals; Don’t Call Me Son (2016) and the documentary Alvorada (2021).