I think JustImagine isn't trying to say you suck go away. It is just really hard when it can be implied that you are taking poor care of the most precious thing in your life. No one likes to be told you don't know what you are doing or even imply that "hey you are stupid, but *I* know how to do it right. Listen to me!" I'm not saying that is what you were trying to say, but I can see how Imagine might take it that way. When you spend every second you can doing everything in your power to make sure your horse is ok and sound, then ask for advice and get replies that suggest things that indicate she doesn't know what she is doing, or went about it in a way that others may not agree with...it becomes difficult.
I'm sure none of you would want to be told you can't take care of your horse right. I think you (please note "you" is not meant for one single person on here in every form I've used it in so far in this post) are trying to help and offer ideas, but it is just the behavior or the manner or more simply, I think, the word choice, that suggests she is horse-ignorant that has upset her. I'm sure she does the best that she can and it is also really stressful dealing with a horse that just can't seem to stay sound.
~He knows when you're happy
~He knows when you're comfortable
~And he always knows when you have carrots.