I just looked it up online, lots of sites say it can cause anaemia in dogs, but lots of sites say its totally safe. So I might risk it and see how she does. It says 1 teaspoon a day for small dogs in her food DAILY, so I'll make it half a teaspoon since shes only about 7 lbs and just incase it makes her sick.
Also what about Brewers Yeast? I found online you can add that to dogs food too, and the smell will come out in the dogs skin again repelling fleas.