But Kyrie was presented to have died there. If she hadn't, Will wouldn't have said no falsehoods in final moments as told. It wasn't in red, but Clair was obviously satisfied with that answer.
Anyways, the time of death thing is a nice bit of logic, but it's more of a loophole than a solution. It'll be obvious if you solve George and Jessica's murders first. The fantasy scenes are big clues, as is the number left on the wall outside of the room George is found dead in. For George in particular, there's only one possible culprit.