I went back to work 6 weeks ago, when DS had just turned 9 months. I don't express at all at work. The first few days I was uncomfortable by the end of the day - and then my supply adjusted and it is no longer painful and I don't get so full by the end of the day (if you go for this approach, make sure you have decent breast pads the first few days).
So I feed my son lots in the morning, from about 5/6am in bed and once I'm up in between getting ready for work - last feed as late as possible before I'm out the door. Then I go off to work, and then feed him as soon as I get home, and a lot during the evening.
During the day he will occasionally take some milk in bottle/ sippy cup (formula or a little bit of cows milk) otherwise he just eats food and has water (he suddenly got much more interested in food at about 8-9months anyway, so you may find the same with your DD - it was as though he suddenly 'got' what this funny squishy stuff we kept giving him was for).
He does feed a lot more at night than he did, so I am pretty tired, but overall it hasn't been as bad as I thought it would be (and no expressing, which I hate). If you did it this way, you may find your DD goes back to wanting night feeds, I suppose, (my DS had never given them up, he just increased the frequency!).