Is magic something any of us can do? Near as I can tell none of us have abilities that specifically mention us being able to speak the Light tongue.

Following on that since none of us can naturally speak the light tongue, we’re going to need to go for a Wounded Gazelle gambit. Trick the mortals into thinking an innocent is being attacked so we can ambush them. Not like we’re going to get any Information from questioning them (because none of us know the light language).