Why is this goat crazy?

This is Pepper. He came to us with a pal Salt. Regretably I had to euthanize Salt. He was attacking us and getting mean. I do not allow an animal to live with us if he is mean. We are actually a business with allot of people coming and going and a mean animal is not welcome at all. Pepper suffered having his manhood taken away. I think I would allow this guy to get nasty because of us being mean to him but he has forgiven us and is still a very nice goat. Of course he doesn't trust people and gives everyone that comes near him a very wide berth.
On the other hand, Margaret has been given every luxury this home can provide and she is still mean. She will be nice one day and then snap! She will attack. And she doesn't just buck. She wants to rip you apart with those horns. I released her this morning and was about to take her for a walk when she reared up on her back legs and started a dance that landed a horn in my wrist. I thought the little lady broke my arm. She is so nasty. This coming right after I fed her. Wow! No loyalty in the goat world. What amazes me is that I raised 6 goats and all have such a pleasant attitude. What could have happened to this one? She came from a home with people that really cared where she went and they even came to visit her a few times and made sure she was well. I wish I knew where they were. I'm going to kill her and I'd much rather just give her back to her previous owner. So if you are reading this...COME GET THIS FLIPPEN GOAT!