I totally agree with csc. I would want to know specific goals, methods of achieving those goals, time frame, and way of measuring successful completion of those goals.( can you tell I am a retired school teacher?)Granted it is not like learning your multiplication tables, but anything you want to achieve needs basic plan and you tweak it to fit the goal. A treatment plan should be developed for what she feels is left to achieve and be presented to you as such and then you and your husband and son make the decision.
I am a momma bear also and had to be careful not to over protect my "cubs" while they were in school and one in treatment. I found it was better for me to be more hands off, just the motivator and supporter for the school part, but the one in therapy, I found more often than not, my gut instincts served me well. Good luck.