As outlined in the OOC, Irene will now move up behind Valamir to K47 and cast Sanctuary on herself. Any goblin trying to attack her must make a DC 17 Will save or it loses the relevant action and thus wastes that part of its turn.
Spoiler: OOC - DM Only
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While I'm fairly certain that we're still in the dark, now that combat has begun, if there were any sort of light or ability to see color, a Perception check of an appropriate DC (anywhere between 15 to 20 depending on your preference) would now reveal the typical heterochromia characteristic of Changelings.
Also, the Encyclopedia Salesman sketch is one of my favorites. :) You have good taste.