Given scene/plot descriptions from movies or TV shows, and given a specific question about the scene, summarize the question into a title

In Red Sparrow Dominika Egorova attacked a fellow cadet, who tried to rape her.  Later, Matron calls the fellow cadet and her. Matron says to her:    For the deception to be complete, you must hold nothing back. Nothing.  Understand? Give him what he wants.   What deception is Matron referring to?
Which deception is Matron referring to?