She could still be allergic to the foods. Before the age of 3 my daughter never tested allergic to peanuts, but still broke out into hives, swollen lips, ect from them. The test kept saying there was no peanut allergy. The she had another test at around 5 years old which showed her allergic to peanuts at a level 5 I think?
my kids are 10, 7, and 4. i'm due any day now