Does she get in and out this tote to use the bathroom/stretch her legs??? Having her food and water next to her is a No-No in my opinion. She will poop in her nest with a set-up like this----broody poop is not like normal poop if you haven't experienced that yet. A ideal broody pen will have a place for her to get off the nest to stretch her legs, dust bath, food and water far enough away that she has to get off the eggs to get to it---then she want poop all over everything. I use totes like this but I cut a big hole in one end so the hen can walk in and out and the chicks can get in and out after they are hatched. Good Luck
I agree that she should have a better option for moving around when she wants, I think you could do it though by a bit of adjustment without having to cut the tote if you don't want to...
I'm not a big fan of excessive moving of a bird but this could be another option, though I also have a lot of totes with holes cut in them!
Get some chicken wire or similar fencing, pick her directly upwards, being very careful to check under her wings for tucked eggs first, and set her into the wired off area to stretch for a few minutes. Place her eggs onto a folded towel for safekeeping, set the tub over onto it's side and rebuild her nest, placing the eggs into it. Use the wire to create a small 'paddock' in front of the open end of the box. Leave food and water in the fenced area where she can get it when she gets up to stretch. I would also drape a towel or sheet over the top of paddock area to create a 'roof' to prevent her from jumping over it.