Be careful; Kara is at her _cruelest_ when she's under pressure. cruel crueler cruelest
E.g. Kara is at her best when she's happy.
good better best
other variations
Kara is more cruel when she's under pressure.
Of little importance and or signifiance
It made more sense in the aspect that,yes Nick was one of the main characters but he was there to see a story unfold. To see who,how and why Gatsby,Daisy or Tom were they way that they were.