Mike Farley wrote:
It wasn't that the earring was in the wrong ear, it was MISSING because the Thing couldn't duplicate non-organic material. Her suspicions were double confirmed when she asked about the earring and he reached for the wrong ear.
He wasn't taken over by the alien until after they entered the alien ship.
As written, Kate was supposed to unambiguously die, walking off into the freezing wasteland. The studio changed it to leave her fate up in the air, presumably for a possible sequel.
Geez, since I don't recall that we see him being taken over by the alien after they entered the spacecraft, is it just her coming to that conclusion as they were getting ready to get back into the helicopter and she didn't see an earring? And so, I still wonder why, after she torched him, didn't the alien break out of the body as it was burning? Thanks!