that's the interesting (and confusing!) bit,
ingedients as follows:
genius bread: Water, Potato Starch, Cornflour, Vegetable Oil, Tapioca Starch, Egg White, Rice Bran, Cellulose, Sugar, Yeast, Salt, Stabiliser (Xanthan Gum), Rice Flour - the vegetable oil is rapeseed oil, apparently.
dietary specials: Water, maize starch, rice flour 6.8%, linseeds 5.9%, wholemeal rice flour 4.6%, sunflower seeds 4.28%, sugar beet syrup, buckwheat flour, vegetable fat (non-hydrogenated palm fat), thickeners: guar gum and hydroxypropyl methyl cellulose, potato starch, yeast, apple juice concentrate, salt, soya protein isolate, antioxidant: tartaric acid
the DS bread has stuff in that normally I would avoid (probably why I had never bouight it for her before - the apple juice, wholemeal rice flour).
I thikn it might be the linseed making all the difference to dd1, but that is just a guess.
I originally thought it might be a cross contamination issue, but apparently Genius bread is made in a totally gluten/dairy free site, so it shouldn't be a contamination issue in the facotry. maybe their flours aren't pure, though, so the contamination could come form their flour suppliers? it's a mystery.