Short answers, pulled from the story.
Betrayal is the breaking or violation of a presumptive contract, trust, or confidence that produces moral and psychological conflict within a relationship. Philosophers Judith Shklar and Peter Johnson both concluded that no clear single definition is available, arguing that betrayal is more effectively understood through literature than through formal philosophical analysis.
Betrayal trauma resembles posttraumatic stress disorder but involves greater amnesia and dissociation. The key distinction is that traditional PTSD is historically rooted in fear, while betrayal trauma is a response to extreme anger and specifically involves a violation of trust by a trusted individual or institution.
Betrayal blindness is the unawareness, not-knowing, and forgetting that people exhibit toward betrayal. Jennifer Freyd introduced the term in 1996 and expanded it in 1999; Freyd and Birrell extended it further into Betrayal Trauma Theory in 2013. Betrayal blindness affects not only victims but also perpetrators and witnesses.
John Gottman computed the betrayal metric by calculating how unwilling each partner was to sacrifice for the other and for the relationship. A consistently elevated betrayal metric indicated the couple was at risk for infidelity or another serious disloyalty, as described in his book What Makes Love Last?
Gottman identified multiple types, including sexual infidelity, conditional commitment, a nonsexual affair, lying, forming a coalition against the partner, absenteeism, disrespect, unfairness, selfishness, and breaking promises.
Institutional Betrayal refers to wrongdoings perpetrated by an institution upon individuals who are dependent on that institution. It includes both active harms and failures to prevent wrongdoings or respond supportively to them, with sexual assault committed within an institutional context given as one named example.