Call the vet ASAP. Idk about you, but blood all over her cone is NOT normal. I'd say she opened her stitches, or the vets mis-diagnosed her ear. Coul be an infected cyst, and when drained, infected cysts can drip blood and pus. Good luck. My dog who passed away needed to get one of his toes removed because his bone marrow was infected. It was quite serious. It just reminded me of this.