Angel answers,
"Personally? I'm excited. I heard we'll get to see an ice castle. And frankly, I always loved snow and ice. It's very beautiful." that last part, a hint of girly can be heard in the tone of her voice as Angel has a soft spot for winter and its white beauty.
Terdisas:
Why can't cold damage resistance mean cold weather resistance?
Far as I'm concerned, it does. Heck, it's even implied by the Calimshan regional benefit as listed in Forgotten Realms.
"Calimshan’s unforgiving desert can sear the skin and strip the bones of the unwary traveler, but its inhabitants pose the greatest danger."
"You gain resist 4 fire and a +5 bonus to Endurance checks made due to thirst."
And even if that hint isn't enough, I would say house rule it because it makes sense. But where exactly does it indicate cold resist doesn't mean weather resist? You referring to the section on endurance skill?