No response to an email containing a disclosure of CSA is right up there with the dumbest things a therapist could do. There is no justification for this. None. Waiting for the client to bring it up in person... what? The email has to be acknowledged in some way. You don't leave that sort of thing just hanging there.

Why are therapists are let off the hook for the most egregious violations of common sense and decency? Blows my mind.

Also, just because a client misses a session, the therapist is not absolved of responsibility for keeping said client informed about vacation and possible changes in email response times.