It's been years since she's had to read Mireille's expressions, but she hasn't forgotten.

"S'all right."

She holds her gently by the shoulders.

"I've found you. The two of you are gonna be jus' fine. All we gotta do is figure out a way t'get you back t'Weyland, an' that's jus' as easy as me findin' a door. In the meantime, I'm gonna keep you safe."

And that is a solemn promise.