SteveBaz-I think if you haven't lived with the fear of this allergy you can't understand how bad it can be. For example, if a chicken ate some of a flock block and got some peanut butter on their beak, and then went to lay an egg, and moved the egg around with their beak after, there would be peanut protein on the egg. Or if they walked on the flock block or where the flock block previously sat, they would have it on their feet, which could then be spread all over the place. Even if it's a minute amount that can't be seen it's still there and it may be enough to cause a deadly reaction. Then the OP's daughter goes to gather eggs and touches this egg or pets the chicken or picks it up and it has the proteins on its feet or feathers. Just touching it can cause a reaction. Then if she touches a surface that she touches later before eating, that is ingestion. It doesn't matter that it isn't very much. Traces can kill. That's why some people who are allergic avoid things that are made in the same facility as something with nuts. It's that bad. My daughter got horrible hives just from walking past a bin of peanuts. With most food allergies you have to actually ingest to have a reaction, but for some (peanut, tree nut, fish, shellfish) and for some people, just touching or inhaling is enough.
In our case I think if it was me with the allergy, I would take more chances. When it's my child, I'll do anything to keep her from having a reaction of any kind. Even a mild one.