It is absolutely normal, even for older children who are anxious about care as well. The first few weeks or visits can be quite unsettling for them, particularly the age that your little one is now. You may find that she starts to drink it in the coming weeks, or maybe she will just eat and have water during the day and hang out for you at home. Most babies I have cared for have eventually started drinking milk but we don't generally see a lot of breastfeed babies.