Just tagging on something that started to bug me lately. One of my MC's (let's call her A) in the book ends up being shot in the side with an arrow and falls (down/backwards as she was hovering over it) into a partly-frozen-over river. The other MC (aka: B) kills the archer, then dives in after A and nearly drowns in the process of getting her out, but due to the fact that B is not exactly human, he was able to head-butt the ice and break free. (aka: he's a giant wolf) Now, B is fine, his body temperature is too high for most cold to affect him, but A is now at risk of hypothermia. B does wrap his coat around her, as well as one of his freinds', then gets her into the Fortress to try and bring her to his room and a fireplace to warm her up, but then he's confronted by his father, the MV (major villain) and questioned. After a tense moment when it seems that the MV might recognize the girl for what she is, B manages to get her away and safely upstairs. Now, that scene bugs me, because that means hypothermia may have already set in during that timeframe. Does anyone know how long it takes for hypothermia to come into effect and if there is any way to keep the victim alive?