Invoked: Ken deliberately kills someone close to Chihaya to break her.
Exploited: ... and attacks her once her guard is down.
Defied: Chihaya refuses to give up hope, knowing that things will get better through time.
Discussed: "Ever since Sayaka got killed, Chihaya's not done anything but sit there, and she barely eats!"
Conversed: "We need to show the heroine at her lowest so we can develop her character and have her recover as a stronger person."
Deconstructed: Because Chihaya has lost all hope, this eventually leads her to adopt an extremely cynical mindset which would then cause her to go beyond the Moral Event Horizon alienating those who cared for her.
Played For Laughs: She just lives the rest of her life in fetal position.
Oh no! It's the end of the page! How can we continue on past this point? Well, we could go back to Despair Event Horizon