Difficult to stop her I'm afraid!! It's a charming habit lots of dogs have.
I can sometimes stop my dog, he does a thing where he'll sniff the poo, then have a little tiny taste, then he kind of moves alongside and if I tell him not to do it by that stage, sometimes he doesn't.
You can get a dry shampoo that you spray on and brush out which gets rid of some of the smell. I keep some in my car for emergencies when he smells too bad to be in there with him.
Dogs are gross!!