Why is Selena Dawes imprisoned in the novel, Affinity?

When Miss Silvester attends a dark circle at Mrs. Brink's home, she becomes fascinated with Selina Dawes and later requests private sessions with Selina. During one of these sessions, Peter Quick appears to Miss Silvester, and she becomes so frightened that she begins to scream. In an attempt to calm Miss Silvester, Peter Quick slaps her. However, this only increases her hysteria. Mrs. Brink breaks into the room, sees the scene before her, and collapses from a prior heart ailment. It is this episode that causes Selina Dawes to go to jail.