content: To be fair it really depends. I enjoy winter backpacking, and if you wear enough layers it isn't a problem. The trick is regulating your body temp so you don't sweat because when you sweat and stop moving you start to cool down too much. When I start hiking I typically just wear one layer (like a tight under armour base layer) and once I stop moving I add back layers. When I'm moving my body is creating enough heat to keep me warm so I don't need extra layers. Plus if she is a Nord then she can more easily deal with the cold.