What happened to Kate at the end?
People saying she did this, she did that, she froze to death etc.
BUT why don't we see any of this?
And why would she choose to freeze to death when she could return to base?
And why choose death over life?
Also, considering her desire to wipe the Thing out, wouldn't she have been motivated to return to base to either make sure it was dead, or to warn the outside world about it?