flea

I'm now wondering if hunger isn't her real problem. Could you add a bedtime snack, like warm milk or other sleep-inducing foods? Maybe move the big meal of her day later (or earlier, if it's already late, et cetera). You're up against a circadian rhythm thing, I suspect, and the trick will be to gently reset it.

Does she get a nap? Maybe you need to tire her out more rather than less....