When Clarke catches up with Madi as Madi attempts to steal the rover and join the fight, Clarke attempts to deactivate The Flame by speaking the phrase "ascende superius". When the phrase does nothing, Madi replies she changed the pass phrase. However, it was revealed in earlier episodes that "ascende superius" only activates The Flame while "quia nunc vale" was the phrase to deactivate it.
Clarke along with Abby make a false comparison between Abby arranging for the 100 to be sent to Earth and Clarke's drastic actions to keep Madi safe. All of the 100 were sentenced to death, so sending them to Earth gave all of them their only chance of living to adulthood. Whereas Clarke actively contributes to the death of hundreds who otherwise might survive rather than allow Bellamy, Gaia and others to protect Madi from Octavia.