Reminds me of a favorite quote
Contradictions do not exist. Whenever you think you are facing a contradiction, check your premises. You will find that one of them is wrong.
Ayn Rand
Given your daughter's selective mutism, there is no way that an unfamiliar tester would be expected to be able to create a Verbal Index that reflects your daughters thinking skills. So just 'throw out' the WISC from your mind - no easy task - and keep on as you've been. If your gut is telling you that she isn't stretching, even with work a grade level ahead, then proceed as though she isn't.
I believe that somewhere there are guidelines that say that if the profile is as spikey as your daughter's is, then FSIQ shouldn't even be calculated. That is one spikey meatball from the bits you know so far. I don't think she is overachieving, I think that the IQ test is just not working for her.
It is very complicated to figure out how much energy to divert to home-enrichment with the SM and anxiety. Some kids with these issues need an undemanding academic life. Other kids will become more anxious and more SM until they get some academic environment that is demanding, and some 'real' peers, not just agemates. I wish there was a way to predict which group your DD falls into at this moment, but I think 'trial and error and close observation' is your only tool.
I applaud your greatness of courage for the gains you have made so far. I have no doubt that you will keep trying and eventually get things to go well for your DD.
I invite you to stick around here and chat with up about the daily ups and downs. Perhaps the only thing you'll get of value from the IQ test is that the 'findings' led you here.
You mentioned that the Raven's might not be accepted by the school. Let's say that the Raven's was given and your DD scored MG to HG on it. What would you hope that the school would do for your daughter if they accepted the test information?
Love and More Love,
Grinity
