She's heard of the incident, but hasn't got much information about it, mostly she's picked up on people having hushed conversations and maybe asked them very basic questions.

The familiar voice stops her from giving the target another stab, gaze turning to meet her, expression softening just a bit. As far as she knew, Cosima just disappeared, and based on their last conversation, Delphine read into to it and came out with an entirely incorrect conclusion. So she was surprised to actually be approached by Cosima, but kept it hidden well enough. But she didn't hold back the wry laugh that escaped her throat. She's left behind 'do no harm' the minute she's held a gun, or better yet, tortured Rachel.

"I see you're still cheeky," with that she turned to face her, dagger going back into it's sheath. "'Do no harm' never meant pacifism. 'Just war' applies here." Just war has been applied to her for some time now, but she keeps that to herself.