emmet: I agree 100% with Redleg, A. people assume that a therapist is good because he/she is a professional and therefore must be qualified to help any/everyone. This is simply not the case.
Therapy is very similar to shiduchim in that there needs to be a good fit of personalities between patient and therapist.
It sounds like she has taken a maternal approach to your son (asking her rav?!). Good idea if it was her kid, however for someone she is advising professionally if the subject is beyond her ken she must refer to another professional!
The idea of breaking the computer would be great if your son would be the one doing the breaking because it may be akin to an avodah zarah for him. But it is not intrinsically that and for you or another authority figure to break his stuff is begging for serious relationship damage.
Hatzlacha rabah, it is hard to hug your son too much.