Even in my durge run, SH only killed NS when I encouraged her to do it. Left to her own choice, she spared Dame A.
But I 've seen a case where the TAV had died in the battle with Balthazar. In a party of 3 without Tav, SH resolutely and unquestioningly kills NS.
Maybe something has triggered the game to think there's no Tav.
You have an interesting case. I don’t know what actually happened, as I don’t play as a fully customized character Tav. However, I have a hypothesis here. With Tav dead, the “remain silent” option is also gone. Shadowheart will act on Tav’s default action, which is unlikely “remain silent” - hence she’s determined to carry out her mission. Make sense?
