Thanks to everyone for the advice. I never considered a vision problem, so I did check her, and she sees just fine. She can see us sitting on the front porch from her pen, which is probably about 75 feet away.
We rebuilt our pens so that we have three big side-by-side pens, with the kids in pen 1 on the end, the milking goats in the center, and our horse in pen 3 on the other end. Ebony spends part of the day with the other goats and the rest of the time with the horse. We also set up some trough feeders for hay for the goats so they can free-feed all day instead of getting two meals. (Before, they were just ruining most of the hay, so we had to limit what we gave them). If they're full, they're more happy. It seems to work well so far. Ebony's still a bit noisy, but we got the kids weaned and she's calmed down a good deal. She's still a pain to work with or milk; I've tried a variety of collars and halters to see if she has a preference for how she is restrained and led. She definitely doesn't like a halter, but changing between chain, leather, or nylon collars made no difference. She milks fine if she wears a special homemade hobble that keeps her hind feet tied back to a post behind her; it seems to calm her for some reason. When I put her on the stand, she is nervous, but once the hobble goes on, she relaxes and starts to chew her cud. But if I don't use it to handle her on the milkstand, or just hobble her without tying her feet to the post, she still goes nuts. I guess she just has a thing for being tied up lol...
We're looking around for a home for her where she won't have to work but can roam around on a large acreage with a buddy goat or keep a lonely horse company. If we find someone willing to take her on, we'll probably give her away. If not, we'll keep working with her. We love her to death, but she's just not very bright. Her kids are doing much better even though we had to wean them really early. They're much more friendly and not nervous when their mother is out of the picture. The doe, at six weeks old, already climbs into the milking stand for me and lets me do whatever I want to her. When I 'pretend milk' her for training, she even moves her legs out of my way so I can get at her teats. What a good girl!
As for CAE--We rarely sell, but any goats we sell are sold without any guarantee as to being CAE free (or other diseases.) We make it clear that they were raised by their own mothers, and not vaccinated or treated with anything unnecessary to sustain their life and happiness. (I guess you could call them organically raised) We encourage any buyer to have their animal checked by a vet and they can return it at any time for a refund if they aren't happy. Mostly, our excess goats are butchered for our own consumption or that of friends, or distributed to friends who want a pet/family milk producer. We pretty much raise them the old-fashioned way according to our religious beliefs and don't let the government or big livestock production factories tell us how to raise our animals; and we only sell to people who do the same. We feel a kid raised by its mom is a happier, healthier, more well-adjusted kid than a bottle-fed one eating sterilized milk. We don't even sterilize the milk we drink ourselves; if raw milk is healthier for us, then of course it is better for our animals too.
I'll look into the bach flower remedy. I've heard plenty of good results with it in horses and dogs before, but have never used it. Sounds worth a try.
Thanks for all the advice.