Crime scene in the hall

Axioms

All the reds are from Evato

• Kyrie didn't think that they needed food.
• Since going without food for about a day wouldn't kill them, she claimed that they should not leave the guesthouse. And yet, she herself suggested that they should leave the guesthouse to get food.
• the reason she changed her mind was not passed on to anyone, nor was it written down!
• Until the last instant before she died, Kyrie's behavior pattern of 'not going to get food = not going to the mansion' was maintained!
• Kyrie did not leave anything written down!

Corollaries

For once Battler is right. Kyrie simply suspects Hideyoshi and wants to confront him 2 on 1.
It's also a red herring to make you suspicious of Kyrie and Rudolf.