Also, consider whether "DOC" refers to a Word document or a documentary style. Either way, the piece should mimic a narrative with a documentary feel, perhaps using first-person perspective with reflective narration.
Mi hermana no hablaba. Solo dibujaba círculos en su cuaderno y me repetía: “Él no está mirando a ti. Está mirando lo que podríamos ser”. Esa noche, en el dormitorio, me pregunté cuánto de la farsa era suya y cuánto ya era mía. A Mi Padrastro Le Gusta Mirar - Belle Hart -DOC
In summary, the piece should be a fictional narrative exploring the complexities of a step-parent relationship through the lens of observation and its psychological impact. Focus on building tension and character depth, using a documentary-like style if applicable. Also, consider whether "DOC" refers to a Word