Bless her - this cant be pleasant at all for her .
Coeliac ? this is an autoimmune condition and is known
to run along side Type1 children .
The NHS is seeing more of this developing nowadays .
I am coeliac too - so look at
protein foods
free from wheat/
gluten to replace the excess carbs .
Are her parents being supported and guided through the coeliac issues now this has been diagnosed ?
Rule of thumb is it is the
gluten in foods that will trigger the reactions off .
It can make her feel really washed out too .
Never mind just her diabetes poor lass .
Troughing and peaking BG levels is consistent with food intolerance reactions .
As this impacts badly too - I know this factor to be true myself .
One will bounce on the other kind of thing !
She is a lucky little girl having such a lovely grandmother like you looking out for her

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We will support you too best that we can do.