I am looking for help to approach an old friend about her horse that is desperately thin. The owner is in her 80s and the horse is probably around 30 years old so understandably neither of them are in great shape. I tried saying that I thought the horse looked thin but was just told that it was due to age - it really is skin and bones (thoroughbred type, a showjumper but probably ex Racehorse originally). This friend is very experienced, a lifetime spent as a professional equestrian. Any ideas how to tackle it in a sensitive way, as I don't want to hurt her feelings but want to help.