Good Afternoon and welcome! I am Dr. Loretta, a licensed veterinarian and I am happy to answer your question.
Because of the age of your sweet girl, there is a good chance that she is suffering from a digestive disturbance secondary to something she may have ingested or even stress. If this is the problem, the treatment is as follows:
Fast your girl for 12-24 hrs which she is doing herself to allow the digestive tract to calm down and heal.
Give her Pepcid AC or Famotidine at 0.5 mg per pound every 8 hrs. That can be purchased over the counter at the pharmacy.
Give only small amounts of water during the fast or ice cubes
After the fast, feed rice and boiled chicken (2/1)
If the vomiting has resolved, then wean your gal back onto regular food. If the vomiting persists especially during the fast, take your gal to your vet for an exam and lab work to determine the cause for this. This is extremely important since this can cause dehydration or other more serious concerns such as an intestinal obstruction.
Does that make sense to you?
Please let me know if you have ANY other questions. My goal is to give you 100% satisfaction and if you are not yet satisfied, please REPLY so I can clarify for you.
Sincerely, ***** *****