Have an Answer?
The best option is to send out inquiries to a few practicing clinical psychologists in the area about potential internship positions in their offices. Don't expect all to reply immediately, or at all. Psychologists tend to be very busy, often having back-to-back appointments with patients during the day and late afternoon.
You could offer to perform menial tasks and/or other low-intensity duties around the office in exchange for "shadowing" them and getting a feel for what they do. *There is a 70/30 chance that they'll allow you to sit-in on a treatment unless the patient gives explicit permission beforehand. On the small chance you were allowed to observe, anticipate being asked to sign a confidentiality form, etc.