Thanks for all the good suggestions!
Let's see, I've tried eliminating dairy, soy, eggs, all nuts, tomatoes, citrus, and chocolate (!!!!) for three weeks now. Also tried eliminating wheat and corn for 10 days, then added back with no difference. Problem is, I messed up: just saw that the wheat bread I bought this week has some whey in it!! Arghhhhhh. Should've read the ingredients better. So I guess I'm starting over....
I've also been taking fish oil capsules and eating ground flaxseed to see if they help. Thinking about doing the real Sears elimination diet if things don't improve soon.
Last night DD figured out how to scratch! Just about broke my heart. I got desperate and put on a little 1/2% hydrocortisone and a little Aquaphor just where she was itching, and sure enough this morning it looked a lot better. I think I'll only use it for the worst spots and use the homeopathic stuff everywhere else. I've been trying shea butter this week to replace the Aquaphor, but it hasn't really helped (yet?). I just reread about the olive oil and oatmeal, so maybe I'll try that for a week.
Also, I switched detergents to the Ecos free and clear. The All free and clear has brighteners added, so I got rid of that. Her eczema's been just about the same for a month now, and I know I'm changing too many things at once. I'm just trying everything I can think of, and then will add back foods one at a time in about a month.