Sammida

Well, yea. Considering she wasn't jettisoned off of a cliff. I think that she actually stayed with the aeroplane until it's resting place atop the precipice. So, not only was she not as injured, she probably got moving pretty quickly. And, I think Will was incapacitated for probably 4-5 hours, considering the aurorae in the sky are still aflare. The only thing that separated them, really, was the tunnel collapse. Because whilst Will was helping Grey Mother and climbing the mountains, she already had a straight path through the mountains. They are likely only separated by about a day by the end of Chapter 1 (depending on how fast you play). Though, I have not yet finished chapter 3 so I don't know how much they diverge thenceforth.