No, it's not based on real events. The story was created by the filmmakers to entertain the audience. It might draw inspiration from common themes and situations, but it's not a true account of something that happened in real life.
The movie 'No One Would Tell' is purely fictional. It's the product of the imagination of the writers and directors, not a retelling of actual events. However, it might touch on emotions and issues that people can relate to in a broader sense.