I don't fully agree with the tdocs and psychiatrists. I think she needs a plan. You give her a set time frame to work through this (end of 3rd quarter?) and if she isn't doing a lot better then YOU step in and do what she seems to be UNABLE to do - lighten her load. in my opinion the advanced classes are going to give a LOT of problems with lessening her workload. The classes are designed for kids who are able to cope with the increased workload. They are generally limited in size and they have regular classes for those who can't keep up. I don't say that this is RIGHT - just that it is what the school will say. You can push, but they are going to fight bigtime because if one student does less work then lots push for it, or kids who can't keep up with the workload then say they are discriminated against because this or that.
Again, I don't think it is RIGHT - but it is probably the reality that you will face.
At some point we have to step in and say "this isnt' working. You are doing all you can, and now it is time for me to be the Mom. It is my JOB to make sure you are not in over your head and now, you are. We have tried to get other things to help, but enough it enough. You can be mad at me if you need to be. But this is what we are doing." and then you cut her course load to what she can handle. She can try again with the advanced classes next year or the year after or in college. She can even "prove you wrong" by doing online classes over the summer if she is able to handle it. Or take a college class at a local jr college or even 4 yr univ over the summer. There is plenty of time for her to get the advanced stuff. Right now she has to function - period. What good is any of the advanced stuff if it pressures her so much she can't function at all?
I understand why the psychiatrists and tdocs want her to handle it - but they don't see the problems 24/7 and they don't have your instincts. So set that timeline, even if it is just in your head and you don't discuss it with her because it will pressure her more, and then, do what the instincts say.
The times I made the biggest, most awful mistakes with my kids are always the times I listened to the "experts" and not MY expert instincts. Those instincts are there for a REASON - to help you do what is best for your child. Period. The tdocs and psychiatrists don't have that instinctual wisdom and should be considered as giving advice, NOT orders. in my opinion anyway.