That person at INT 27 and outlining a dozen possible worlds will have considered Carissa's careless death to Hell and its mind-reading as something Carissa might want consciously or subconsciously. Carissa Sevar won't have been allowed to come on this trip and augment herself without a promise that she'll try by sincere effort and wit to stay alive, however much she might hope to die.
That person will not have asked of Carissa that she not hope. But he'll have required that Carissa not act to bring about her hopes, that she if necessary act to prevent her hopes from coming to pass. He's put himself together in a way where he can hurt about that, about demanding things like that from somebody he still cares about deeply; he no longer tries to avoid that hurt by taking refuge in calculation. But the reasoning will be clear nonetheless, and he will have demanded of Carissa what he must, to ensure that this universe can still be destroyed if necessary, for there's people hurting more than her.