If this just started this morning, I'm not surprised that she hasn't eaten her food. It's not terrible if she doesn't eat for a day or so. If you have some lean ground beef, you can boil it in water until cooked and then drain off the water into the sink. Make some plain white rice and mix it up with the prepared ground beef. She should like the smell and flavor of this to eat a little bit, and it will settle her stomach in the process.
If she's not feeling well after today, you may want to take her to the vet for a check-up.
You can give her pepsid ac that will settle her stomach. If you take her to a vet ask him to give you some propectalin, in case you need it in the future. You can also buy it online. Good to have on hand.
thank you. I haven't given her anything, yet, and she seems to have settled down. Still a little subdued (for her), but I just greeted her and her tail is wagging. I worry, because she was older when I got her, and I have lost 2 dogs during the month of December in the last 4 years, so I was petrified. She's never been ill, since I got her.
I know this is a bit late, but I generally try to follow a bland food diet for a few days when my dog is feeling unwell or when I am switching her food brands (more on that later). To me, a bland food diet includes boiled chicken (thighs work, but make sure to remove the fat, or breasts, ground meat, etc. whatever single protein your dog will eat, usually chicken, turkey, or beef) and cooked rice. I know, a grain, the horror, but unless your dog has a grain allergy then they should be completely fine. Feed them as much chicken and rice as they would eat of their regular kibble or wet food. If they have soft stools, try adding some pumpkin (canned is perfect) to their food, as it will help firm up their stool. If they do well on that then you can slowly introduce some raw veggies (my dog LOVES raw carrot and zucchini, but also green beans, blueberries, etc. all in small amounts). After their poops are normal and they can hold their food down, they should be ready to switch back to their regular food. Finally, I mentioned before that I use this method when transitioning my dog from one brand of food to another. I know that I should be mixing those foods together and switching her gradually, but my dog is a booger and will pick out the kibbles that she likes and refuse to eat the other, so I stop one food, do the bland diet for 2 days or so, and then start the new food to make sure her tummy can handle it.