Do you give her milk on waking? Maybe try that, and push breakfast later?
We do this:
6-7am (no set waking time) 4oz cows milk
8am Breakfast
11.30-12 Lunch
4.30-5.30 Dinner
7-8pm 9oz formula and Bed
You know what, with the day time milk, what would happen if you just dropped one of those 4oz, just one meal? I seriously thought I could never drop the 2pm bottle, that he wouldn't go for it, but one day we did and he didn't even notice. Just make sure you have something to do, or go out, to distract her. She will not be keen on trying more food if she will get milk instead, Caspar is the same way.
Just my opinion but I wouldn't give her that 4oz after dinner, there's not much of a gap to fill between dinner and bed, do you have a bathtime routine then? You might find after a while, that she eats more at dinner once she doesn't get that 4oz milk, and then the bedtime milk would be enough on top of the bigger dinner?
When does she nap, is she tired at bedtime, seems a long time to stay awake playing?
I appreciate its tough, I have this "demanding extra milk" thing too sometimes, I am only glad his nappies can hold up to 15-17oz milk digested over night, otherwise I'd have a nightmare!
I also work a few days a week, so Caspar's bedtime is between 7-8 depending on the day, and food depends on what he's had at day care at 4.30pm tea...sometimes he won't eat and screams for milk at 6.30pm...
Hang in there...