Sure the private killed the kid but the sergeant gave the order. But yes she definitely fucked up and realizes it immediately of course Rath stands there like a muppet. Kagha's not a leader she's a puppet to the shadow druid. Her hostile composure constantly breaks, if you come in as an under being she immediately tries to seek validation from you. If you talk her down from the kid killing she comes across as someone hopped up rather than someone cold and in control. Talking her into breaking from the Shadow Druids she sounds confused and naïve, if successful, if you fail she hardens her resolve. Though, if knock out actually did something a good ass kicking would probably also smarten her up.
Druids always stuck me as xenophobic and haughty, I suppose these ones are just more blatant.