This is not the therapist just not being at their best one day - the OPs example was a therapist who was not even just doing reasonably okay. OP did not say she expected perfection - but the therapist is being paid to do a job. You wouldn't excuse a house painter who left off a wall or tracked paint on the rug by saying they aren't perfect or had an off day. You wouldn't excuse a surgeon who cut out the wrong organ because they are not perfect. You wouldn't eat raw chicken because the chef is human. In my opinion, that line of thinking is just ********.