If you elect not to seek veterinary attention:
1- Keep indoors to avoid eating grass/ leaves for 6-8 hours from last vomiting episode and no water in this period as well to allow the stomach to rest
2- Offer a small amount of water (1-2 teaspoons hourly) for a few hours
3- Start Pepcid (famotidine) 10mg 1/4 tablet every 12 hours OR prilosec (omeprazole) 20 mg 1/4 tablet daily for the next 3 days with the second administration of water (crushed if needed)
4-If no vomiting, offer small amount of white rice and boiled boneless or ground chicken or ground beef. For example, one teaspoon hourly for a few hours then slowly start to increase the amount while reducing the frequency. Keep on this diet for several days then wean into regular diet.
5- If vomiting continues after doing the above, I would encourage having your family veterinarian perform an examination to determine the next step to getting Princess comfortable
Indications your dog should be seen by a veterinarian sooner include: sticky gums that are pale, yellow, blue, purple, temperature rectally >103.5, progressive lethargy with less responsiveness to you, vomiting or diarrhea that includes blood, resting respiratory rate (breaths per minute) >60, swollen abdomen.