Homemade Diet for my 9 yr old Beagle

Question
Hi, Jennifer.
I have recently introduced my beagle, who weighs 26 lbs, to a homemade diet, supplementing it with Vitamins C & E, Calcium, and Cod Liver Oil.  I prepare 1 cup of food in the evenings that consists of 1/2 cup of ground beef or chicken; 1/4 cup rice or pasta; and 1/4 cup of steamed veggies. I give her 750 mg of Calcium supplement; 200 IUs of Vitamin E; 500 mg of Vitamin C; and a 1/2 teaspoon of Cod Liver Oil with her food.  I also feed her 1 cup of dry, premium kibble in the mornings.  She had a history of bladder stones, which were surgically removed, and is currently being treated for heartworms.  She has already been given the first injection and will be given the second and third injections in a few weeks.
Since introducing the homemade diet to her, we already notice the difference.  The bounce in her step has returned, she looks better, and her coat is beginning to look better too.
My vet saved her life, and wanted us to go on the Prescription Science Diet, but she simply wouldn't eat it, so I introduced the homemade diet.
I want to make sure I'm doing the right thing to get my beagle healthy again and then continue with a healthy diet and weight for her.
Can you please put my worries at ease? Or suggest how I can improve what I'm doing already?
Thank you so much!!

Answer
I am not sure why Jenifer didn't answer your question.  i would suggest working with your vet to find a kibble she will eat.  Home made diets are difficult to get right, and deadly if you make a mistake.  See http://www.avma.org/press/releases/070404_homemade_diets.asp  I wouldn't risk my dog on a diet I prepared.  

Usually a dog can be trained to eat any chow.  Put down the dish with what the dog should eat, and give it 15 minutes to eat. Then take it up. Do not give it anything to eat until its next scheduled meal. In a few days, it should be eating what it needs. Continue to check its ribs (http://www.longliveyourdog.com/twoplus/RateYourDog.aspx) and adjust the food as needed. This is not easy. I had a Shepherd go 3 days on a few nibbles. I was a wreck, but she was fine. It is almost unknown for a healthy dog not to eat what it needs. Unfortunately, in too many cases, it is less than the package says, and less than the owner thinks the dog should have.