At this age don't feed them anything except the chick starter. It has a little crushed grit in it. In a week or so or even later if you want to start them on anything else, first supply them with chick grit for their gizzards. They need it in order to digest their food and keep from getting an...
Yeah, I wouldn't worry about it. If she still has yolk attached she doesn't need anything else. I've had chicks shipped to me that didn't get anything to eat till they arrived here on day three. Of course I dinked their little beaks in sugar water so they would drink and get hydrated, then after...