I let her have a couple of days of antibiotics before cutting into it. She was an amazingly cooperative patient. It was like she knew I was trying to help her. I made a 1/2 inch incision in the bottom of the sac. Initially a thick bloody exudate came out. I couldn't squeeze anything out, but was able to insert a TB syringe into the opening and suction out a bunch of chunky stuff. Some was yellowish and other was purulent, bloody clumps. I lavaged with beta dine 50% solution, but the solution did not come back out, so I didn't do much of that. After 1 hour patient and technician were tired, so I filled the sac full of neosporin. She is still getting oxytetracycline in water and food. The sac was much softer, but one side still has hard places in it. She is eating and drinking now, but is far from out of the woods. Thanks for caring!