Hmm, well then I don't see the need for all the other stuff then - I'd much rather feed them home baked than packet stuff like is on the her list. Is that for a day or the 4 days? Still seems like a heck of a lot.
I'd go with packing each of them their own lunch box plus perhaps the milk and some bananas and say that's what they have for the day, end of story. Perhaps her children like the things on the list?