J.I.
With my little guy, there was something bothering him when he woke up earlier than usual. He either had an ear infection or he was teething. If she normally sleeps later, and this is just recent, she might have something going on. Maybe she's growing and needs to eat more. With us, we just had to ride through it. Plus, is she crying or fussing? If my little guy was just fussing a bit, he sometimes would fall back to sleep again on his own, so long as we didn't bother him. Too bad they don't come with a manual, huh? Or, whatever the issue was would just show up in writing on their forehead, like one of those thermometers. "Just hungry, mom" "Just fussing a bit, let me sleep". It'll pass.