I agree with happybleats, but would add to put her on a course of antibiotics to kill any bacteria still circulating in her system. Antibiotics won't touch the bacteria already isolated in the abcess, but will eliminate any that hasn't been isolated by the goats body. Keep her isolated until the abcess has healed completely. If she develops a 2nd abcess, cull her.looks like Cl.. I would have a vet take care of it so its not done on property...then flush it 3-4 times a day with iodine until the wallof the cyct is thin and can heal...if you dont do this it will close up, tapping some of the bacteria in it and can come back..