How did pharaohs daughter know Moses was Hebrew?

According to the biblical narrative in the Book of Exodus, it was not Pharaoh's daughter who identified Moses as Hebrew, but rather two midwives, Shiphrah and Puah. These midwives helped hide the fact that the Hebrew women they attended while delivering the newborns refused to follow Pharaoh's decree to kill all male children born to the Israelites. When confronted by Pharaoh about their defiance, Shiphrah and Puah claimed that Hebrew women were quick to give birth before they even arrived to assist them.