The basic principal... IF she thinks this is more work than being at home where it's air conditioned, she has a flush toilet and a shower, and there aren't any bugs... you've lost. :shake:
What's the size of the brazer?
A single size brazer (holds one medium to large pot) is fine for a lone person, and can be made to work for two, BUT for four, not so much.
You're going to need to be able to heat water while cooking the meal, especially the morning meal. So if you have the standard brazier you will need a second brazier, OR one large enough to hold two pots, or a folding fire grate (easier to haul than fire irons) over a fire.
Speaking of water, you are going to need to keep water for drinking, so you may want to think about some sort of jug or water container, to keep potable water in when in camp. You need mugs for the four of you too.
Fire buckets are a good idea if you have a camp fire, a single "fire bucket" works for braziers. They can double as water to wash hands in, and to heat water for washing dishes. Then drown that camp fire at the end of the event. A fire extinguisher, disposable, is also a good idea. I've used mine only once... on somebody else's tent....and it helps with your wife's peace-of-mind.
A shovel to dig the fire pit (if you opt for it instead of a second brazier). If you use wood instead of "cowboy charcoal" i.e. hardwood charcoal, for fuel, even for a brazier, a good axe (not a hawk) and/or a saw will be helpful.
You should have a dedicated cooking knife, a pairing knife, a cutting board, a ladle, and a wooden spoon, a spatula, and a "meat" fork. Add to that a stone to keep the knives sharp.
Speaking of fire and knives... how about a first aid kit? Be sure in addition to burn ointment and anti-biotic cream, you should have some pepto tablets to ward off the "green apple quick step", some aspirin or tylenol, some allergy meds (if applicable) and/or some cold meds.
For cooking in a fixed camp, I like a couple of medium pots, with one that nests inside the other, and a skillet. You can fry breakfast, make hot water (or oatmeal,..or GRITS :grin: ), and coffee at the same time. If you don't make oatmeal you have hot water to wash up when you're done. You can mix pancake batter or biscuit dough in one pot while the other one heats coffee and the skillet is in use, so they serve many purposes.
Two light weight (hint hint) copper or tin pots work well with a light weight, steel skillet. I'd wait to get a Dutch oven, and if you get an iron pot (they can work for baking instead of a Dutch oven, if you get the right style), get only one, as two or more and you probably will need to buy a truss. A cast iron fry pan is great at the fire, but gets old when hauling it around... go with steel.
I hope this helps.
LD
