Hi there,
We went through the same thing when my son was about 8 months old. He would take 1 feed in the middle of the night (around 3am) and then it suddenly became 2, 3 and sometimes 4. Deep down, I knew he wasn't drinking much because I would breastfeed for about 5 minutes, and then he'd calmly fall asleep. However, I felt guilty about refusing to give him milk (plus... it was by far the easiest way to get him back to sleep at night)
Finally, my husband and I opted for PU-PD, and it was tough for the first 3-4 days, and then our DS realized that he wasn't getting any more milk at night. Nights got much better, as did his daytime meals. Two weeks later, he would take a meal at 5:30pm, I would then breastfeed 7:00pm and he'd sleep 11 hours, straight.
So... assuming she's not teething, or in pain, or going through a growth spurt... I would give PU-PD a try. Just make sure to be consistent (and try to get your hubby to help out, it can be hard on you if you're doing it alone)
What does your daughter's routine look like?