Leal is the granddaughter of the cultural producer Américo Leal and daughter of actress Ângela Leal. She started acting at the age of seven. When she was eight years old, she started on television, in the last episode of the soap opera "Pantanal", in which her mother also worked. Leal is an only child. She seems to have been influenced by her mother in her career choice, because since she was a little girl she has been living among the artistic and was fascinated by the art of interpretation.