During the day, remind her that it's her job to sleep when it's dark outside -- plus, Mommy and Daddy get grouchy when she wakes them up at night. Everyone needs their sleep to be healthy.
Adopt the "broken record" approach -- she needs to stay in bed. Lights out. Time to sleep. If she gets up or makes a ruckus, calmly guide her back to bed and repeat the rules. Don't get emotional, don't turn on the lights, don't talk much, and certainly don't offer any food, drinks, or TV.
It may take a zillion or so reminders (or just a few, depending on her personality), but eventually her internal clock will win out and she'll start to sleep again -- as long as YOU'RE consistent in your approach. And when she DOES sleep through the night again, congratulate her for a job well done in the morning, and tell her how great YOU feel after having a good night's sleep!