What's the rest of her routine? How much does she weight?
I don't think that it's unsual.
For us the dreamfeed never worked. It would just start the series of wake ups for the food every 3 hours. If we skipped the dreamfeed, he'd go 6-8 before waking up to eat. So, we didn't do it. We used to go to bed early and take advantage of the first long strech of sleep.