I've been in remission from Graves for almost three years now. I'm just curious to know how does your lady know you are free from Graves and not just in remission?
Like you I've been completely grain free since September last year. To cut a long story short I ended up T2 diabetic in December last year because of treatment I was having for inflammatory arthritis - yet another autoimmune condition for me. Last time I tested my antibodies to see if being GF had made any difference my antibodies had dropped dramatically. So I've been totally GF since September last year - almost the same length of time as you.
I bought my own blood glucose meter (they don't give you one if you 'onLy' have T2!) and I discovered that amongst other things all grains - even the good' grains increased my blood glucose so I've cut them out of my diet - I have to say I do miss a slice of good wholemeal bread and scones but I like having a low HbA1c more.
As I had already gone GF to try and reduce my antibodies I cut out the GF oats / oat bran I was eating instead of regular grains in an attempt to bring my blood sugar down. That worked very well and I'm no longer T2 - I imagine I could go back though if I didn't stick to my new eating regime - basically low carb, high fat. I get my carbs from the vegetables that don't spike my bloods and while I don't go mad on fats I'm not afraid to eat proper fat when I want to.
So well done on being free from Graves, it is absolutely horrible and good luck with being grain free, it is very satisfying when you take responsibility for your own health and see results.