Just because the package says it's safe does not mean it is, and actually now that you said that I can almost guarantee you it's not safe. Chances are you bought it at the pet store, a lot there is not safe. Unless it is made out of fleece completely and stuffed with fleece it is not safe. Your chin has already shown she wants to chew on it, if she chews a hole in it she may eat it and end up with an intestinal blockage.
Remove it and buy her a safe fleece one (found from sellers online) before it's too late