Re: WHO'S HERE?
A party's not Sabine's first choice in a way to meet the people apparently in this Delreth place, but it's also the way that seems to be there right now. And not knowing the social conventions but recognizing it's damn cold outside, Sabine's going to wear a cloak.
Because what's the best way to disguise that you're at a party in full armor than by wearing a cape over your shoulders that barely covers any of the armor. She's going to try to stick to doorways then sidelines, then the periphery of the party while she gets a read of the place.