A few nights back, this lady and her husband were catching the goats to deworm them. The husband grabbed Doodlebug by a horn, which promptly snapped in his hand. The lady caught Doodlebug and filled in the break with blood stop, then let the goat go. (Mistake! Explanation below.) An hour later she checked up on the goat to discover blood running down the goat's face. So she caught Doodlebug again, poured more bloodstop on the horn nub, cleaned up the blood, then wrapped the goat's head in strips of cold/wet cotton sheet to stop the blood from running. The goat was then installed in a dog crate to keep her from running around.
At this point I actually managed to talk to Doodlebug's human mom. I told her to definitely call the vet and request an examination to ensure that there was nothing else that needed doing. I gave the vet's office number and the emergency pager number along with some quick instructions on how to present the issue to the highly competent front office phone ladies. Dr. Massie ended up seeing Doodlebug, and things went well.
What was wrong with the first catch/bloodstop/release: Never allow a pastured animal to go loose with a head wound. The first thing a hungry animal will do is put its head down to eat, thereby causing blood to pressurize the wound and burst out any clotting that might be happening. The thing to do is put the animal in a small space with a raised bucket of water and a raised food dish or hay rack. This will satisfy the animal if s/he needs to eat or drink without giving reason for the animal to hang its head downward. The small space will keep the animal from running around and increasing its heart rate and pumping more blood through that wounded area.
The vet gave Doodlebug a painkiller, trimmed off a bit of the break, and pronounced it likely that her horn will grow back. All's well that ends well, in this case.