Hi and welcome to YorkieTalk! Congratulations on your new yorkie
How old is your little Daisy? And what food are you trying to feed her? Maybe she doesn't like it...Or maybe she's filling up on nutri-cal. Nutri-cal is very important to have on hand when they're not eating, but only give a little bit.
There are some recipes for finicky eaters that you can do a search on here for. Have you tried just giving her boiled chicken(no skin, no seasonings) and rice? That usually gets their appetites going
Or you can try to give Daisy some baby food. Gerber pureed chicken or gerber chicken and rice.
Good luck!