The Fake Heiress Said I Was Faking Being Mute, Until the Sign Language Teacher Understood My Cry for Help

Sophia has been mute since she was five, when her adoptive mother locked her in a wine cellar and told her to learn to shut up. At eighteen, the Moretti family finds her and brings her home as their long-lost real daughter. The girl who took her place, Isabella, weeps and offers to leave, while Sophia can only sign that she cannot speak. No one understands her hands, and her brother Marco warns that the Moretti family can accept a sick daughter, not a liar.

A doctor finds no damage to her vocal organs and calls it psychogenic mutism from severe trauma. Then her adoptive mother Marta arrives, claiming Sophia is only pretending, and Isabella turns the scars on her arms into proof of exaggeration. When a sign language teacher is hired and Sophia starts at the family academy, a classmate named Laura tests her signs and declares them wrong, leaving Isabella to ask how that could be.