Knowing she wasn't that well suited for stealth Valeria stayed in the tree line to help provide cover for the girls with a prayer to cast a barrier of blades on her lips and ready to cast if it was needed to slow any pursuers down when they were slipping away. Gunoke, on the other hand, was more than capable of being sneaky and went with Mouse and Vibenia.
Gunoke became invisible as well, using aether to bend light and sound around himself. It wasn't quite as good as true invisibility but it was pretty close and combined with his diminutive stature made him very difficult to detect.
Stealth: 1d20 + 21 + 10 ⇒ (20) + 21 + 10 = 51
Rather than get down close to where the captives were being freed Gunoke flitted over to be half-way between the center most barbarians and kept an eye on them in case they started to react or look in the direction the breakout.
Gunoke will be ready to mage hand a nearby rock and try to make it clatter in the opposite direction of the breakout as a distraction..
Alos, fairly sue that obscuring mist centers on the caster and moves along with them.