Quinoa is a seed Harriet, grows on something that is related to spinach . Is the diet seed free as well as grain free ? http://www.quinoasuperfood.com/what-is-quinoa/ Buckwheat is officially another seed, and its plant looks a little similar to me.
The salad w fruit - possibly too much fruit. I love a chicken mango salad once in a while. I'd have trouble with the strawberries and pineapple, just because of the fruit they are. I did buy a pineapple recently, it was ok for me cooked with meat and veg dishes.
It just depends what you have problems with Harriet. Obviously for you, something in the mix didn't agree.
I need remember the no commercially prepared things with sugar/glucose added. I keep thinking its ok, but it is not. Even in little doses.