I hate back injuries. They make it so you sure won't get anywhere for a while. I mean, a sprained ankle or something, I could still limp places, but an injured back? Nope! Maybe the snow will help the pain...or chewing willow twigs (used to make aspirin). I don't think mountain lions like chewing twigs, though.
I’m guessing that its going to be something like she was protecting her cubs or something and then she dies and the cubs are motherless and Lupis has a big emotional scene because he was left motherless and he gets pissed at Millie or something.