is it true that if you put some of your dogs feces in your dogs elimination spot it will keep going there...in this case it would be in her litter.

Well, I'm not too sure about her feces, you don't want her eating it!
Pet stores do sell "potty-training spray" it is the same idea, it draws the dog back to the spot where you apply it and they will want to "go" there.
Good luck!