Welcome to parenting. Children will follow schedules to a point. Sounds like you're lucky, as it is, as one of mine was up at 5-5:30AM from the time he was born...and nothing we did would change it. His little brother slept in 'till 7:30. We were ecstatic.
You can try and keep her up later...but that may cause her to be cranky, and still get up at her regular time. It's often easiest to adjust your schedule to hers...go to bed earlier and get up earlier.
Remember that by nature, babies and children get up early. It's part of our proper circadian rythm. It's also been proven that you get your best sleep earlier at night (scientific study related to melatonin and sleep cycles in shift workers).
Good luck.