has definitely realized something is up, there's a moment where she's having an internal monologue about things and suddenly it goes
party
"Now why had she thought that?..."
That moment, perfectly expressed in the typesetting, when the hotel manages to poke into her mind just that much. Since she's very sensible and practical, she hasn't been directly affected like Danny and Jack have, so when the hotel psychically brushes up against her, so to speak,