3 is an Uruguayan film of Pablo Stoll about a remade family of 3. The daughter, 15, is apparently wanting a ratification of her coming of age. In many Latin American countries like México and Argentina girls do a big feast for her 15th birthday.
Anaclara Ferreyra Palfy, the actress, was 20 while filming although in the film she guesses that she plays a 15 years old girl. She guesses that in cute ways, like she is cute in the interviews. She guesses that her character was 15 because she is starting her 11th grade and Anaclara, the actress, was 15 during half her eleventh grade because that is like for students born in June, like she, in Uruguay.