Just another update on our progress. No, I have not sold her, but I think I've found the root of the problem. Boredom. I think she was bored of just walking around all winter. The snow has melted, so we've been going for long walks, playing in mud puddles, and learning to jump. She's only had one episode since I last posted here, she was on the longe line. She seems a lot happier now.