"DBT success criteria?"

My daughter had 2 rounds of DBT, which was not a success. DBT staff marked their own homework, stating that the DBT was a success because she had written a CV. DBT success criteria should include things like reduction in self-harm, reduction in hospital admissions etc. My daughter had signed up for professional help with severe mental illness, not a CV writing workshop.

Why are DBT staff not using professional methods to evaluate and record the success or otherwise of DBT? If honest feedback is argued with, changes are not made, outcomes don't improve....

DBT was unsuccessful because it was not autism informed, carers were banned from making contact with staff and staff often put my daughter at increased risk due to poor decision making.

The bigger concern is why does the Trust not accurately record the success of DBT,  and quite possibly other treatments too?