Q: Does cancelling or ignoring a chaos token count as a cancel/ignore for Diana Stanley's ability? A: A chaos token is a game effect which can be ignored or canceled. If you cancel or ignore a chaos token using one of your cards, you can place that card beneath Diana Stanley using her reaction ability. This includes both Counterspell and Dark Prophecy, as well as any other card effect that cancels or ignores a chaos token or a chaos token’s effect (such as Defiance, Grotesque Statue, etc).
Q: I have a question concerning Sefina Rousseau and Diana Stanley. Are cards put beneath these investigators by their abilities considered to be in play, or out of play? The question arises because they're physically in an investigator's play area, which suggests they might be in play, but there are a few implications that makes me want to confirm. For example, if they are in play, that implies that a treachery such as Ants! can discard them, which feels strange. Can you confirm if those cards are in play or not? A: These cards are considered out of play. They cannot be affected by anything other than the abilities that refer to them explicitly (like Sefina's action ability, Twilight Blade, etc).