I agree, they should not deal with the notes in session. That is perfectly acceptable from a doctor or other service provider but the T should make an effort to have a relatively normal conversation and pay attention to what the client says not what she had written. To me, that is either laziness or bad time management. If she is good otherwise, I would tell her that it bothers you (find it distracting etc) and ask if she could check her notes before you arrive.