When a therapist works with people who are sensitive to other people's emotions, esp those with trauma background where it was survival, they have got to accept that they can't hide it when they've checked out or are otherwise wrapped up in their own struggles. And if they don't say anything by way of acknowledging what they are bringing or not bringing to session, then it becomes a replay of early dynamics where the person knows something is wrong, but can't pinpoint what...and it feeds all sorts of fears and anxieties that the client already know exists (reason for therapy for many) and doesn't need to have re-enacted.