Witch Patrol schedule is a little too much of avoiding the problems for my taste right now, sure it's important, but there are intermediate steps between going all in and pressing the button (which thankfully, no one is voting for), and just dropping anything related to what's happening, Carmen is not a subject that Kyouko will have any problems with since she wasn't involved in her distortion, and the sooner we warn her about this voice she can hear that will offer advices, the better we are.
The schedule can wait, Carmen could very well decide to happen this night if we don't do anything.
Hell, if she already talked to Kyouko we still benefits from learning that this is the case, and can still give warnings.
This conversation was to learn more about Kyouko, we won't get anywhere if we completely refuse to acknowledge any of her problems.