If you are on a limited budget I would try coconut oil. (Plus ZiwiPeak already has salmon oil added) Google it to see the health benefits, there are way too many to list here, it is amazing stuff. Plus you can use it as a cream on any bald/sore/dry or itchy areas on your dog. You can also use it as a hair treatment and moisturiser for yourself. Very versatile and very cheap. Look in health food shops for virgin coconut oil, or try online.
How long has she been on her current diet? If it is new to her, I think you will see am improvement in her coat and general condition in time, ZiwiPeak and Acana are both very good, high quality foods.

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Shes actually been on her current diet for over 3 months now. I asked Nupro for a sample a few days ago so im waiting for it to come and I already found some coconut oil online that I might put in an order for today. Im looking at fish and salmon oil but was wondering which was better between them. Is that too much? Nupro, coconut oil, and fish/salmon oil all together?

Thank you all for helping by the way

I use Nupro, Coconut oil, and fish/salmon oil as well as Emu oil and vitamin E. These are all rotated. So 3 times a week I might give a scoop of Nupro, Coconut oil, and fish oil. The next week he might get salmon oil, Emu oil, and a vitamin E capsule (200iu). I feed a mix of ZiwiPeak, Stella and Chewy's with prey model raw. I'd say he gets ZiwiPeak or S&C for breakfast a couple times a week. The rest of the time he's raw fed.

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"Having heard all of this, you may choose to look the other way.....
but you can never say again that you did not know." William Wilberforce 1759-1833

So it seems the general consensus is that using Nupro, salmon oil, and coconut oil along with ziwipeak and acana is okay and still a balanced meal. I'm going to check out what's available at my local stores tomorrow and probably make some purchases. If anyone has any objections or opinions please let me know!