Oooh goodness! I didnt give you much help on your horse did I! Just on your self! Im sorry! When I do reiki on animals I just do a thorough reiki healing from head to foot, and ask Archangel Raphael, the Angel of healing to assist me, to help with the healing. Run blue throughout the horse, and send it loving pink and healing green. I have found that animals know when they have had enough energy, and will often move or walk away. Trust in your wonderful abilities and I am sure you will help him/her just fine