Gandurk doesn't seem to stop when he goes towards the assailants but eventually does stop before he goes into a threathening range.

Hey, seems like you beat this one good, eh? How about it I stop her bleeding and then take care of the wound she gave you? You know you can't press more out of them if they're dead, right?

It seemed impressive enough that somebody wanted to stand up against these thugs and if this one may made it through they may actually be helpful to get these thugs of his back eventually.

Spoiler: OOC
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Persuasion: (1d20+4)[10]
If they let him Gandurk would use his Healing Kit to not only stabilize Vivianne but also give her 1 hit point back. I don't know if being unconscious really stops rage however...