Since you and your husband have allergies (and from what you say, your daughter having issues), have you tested your residence and surrounding area (underground waste, old mines, drinking water, molds, etc)for possible causes.
We’ve both had allergies from birth. His have improved. My have worsened.
We have moved a couple times and it hasn’t made any difference in my food problems.
FWIW, although nobody has brought it up yet, organic doesn’t help either. I have a vegetable garden and grow everything organically (I could make a fortune if I got certified) and even that doesn’t make any difference. I react to those vegetables just like I react to all others.
My problems aren’t to the classic allergy provoking substances, surprisingly, it’s to everything else; stuff usually nobody reacts to - like virtually all vegetables and most fruits.