It is nice you all are trying so hard to accommodate her. I agree completely with those that have said she is an adult, she is alive, she should be able to tell management what she needs. I would feel bad if peanuts were banned because of me. Reasonable precautions are fairly easy.
1. Management should check with her about what she needs.
2. She needs to have an action plan with someone that is trustworthy and there daily (or have a couple of people with the plan) they need to know where the Epi is, how to use it, have the authority to call 911, and I strongly recommend having a card with a basic history, doctor info, and family contact info that can be handed off to EMTs or Triage Nurse.
3. #2 is important because you have to accept that in the US you cannot ban all products with peanut protein in them. Seriously look in your pantry and go through the product labels you will be shocked at how many have may contain traces warnings. Sally brings chicken and green bean left overs from home. She made the green beans from frozen package. They have a may contain traces warning because the same machine is used to package a variety with peanut sauce. Almost all chocolate in the US has may contain traces warnings. I once landed in the ER because of bedsheets - they were washed in a cheap detergent and the new washer didn't rinse all the residue out. (I was house sitting for my Aunt). So Joan's cotton jacket brushes against new employee - and 30 min later she has a rash and metallic taste in her mouth.
4. The eating outside might be more dangerous than eating at desk. If she isn't airborn sensitive, you might consider having wipes at everyone's desk. After they eat a snack, they can clean their hands, and surface of their desk. If they are eating it outside - they have to touch the door and other surfaces before getting to the washroom.
5. Be aware there are some brands that keep switching their labels. This week it has a peanut warning. Next week it doesn't. I never trust those brands.
6. Don't let any caterer, restaurant tell you that their peanut oil is so pure that no-one can react to it. I'm not willing to take that risk.
7. Don't be offended by survival habits that are hardwired after decades of living with this. Examples
a. I take steps back from anyone eating something with peanuts
b. I put my hands up at shoulder level, palm out as a warning sign.
c. I don't eat homemade baked good with nuts or chocolate. See #3.
d. I don't touch doors where normal people do. I use my hip on crashbars, push at the top of a door stuff like that.
8. Management needs to shut down the following types
a) New Aged - Oh allergies are just in your mind. If you ate something/touched something and didn't know you wouldn't react. (very dangerous because they often try to prove their point)
b) New aged - Oh if you just eat bee pollen/honey you won't be allergic any more. (Annoying but mostly harmless generally they are all talk and don't try to put peanuts in your food. They do tend to show up with lots of honey)
c) Old Testament - Deleted because the comment about a certain religion was totally uncalled for. If you are so concerned it's an issue, Kimberly, PM the OP but keep it off the forum.