Double Black Diamond Horse

In September, Paloma started bucking and rearing. Without warning, she would just go off. It didn't seem the same as last winter, when she'd spook and shy and then take off. This time it just seemed casual, as if she was testing the waters to see what would happen. I got through it without getting dumped, but I decided I didn't want to ride her. So I've been doing a lot of groundwork and put her on Regumate to see if that would help. She also started her crazy spooking in the arena, and worrying about the eurocizer.
Before Thanksgiving we had 3 sessions with Dave Hillman. In the first, he worked her in the round pen and then rode her. It was clear Paloma was trying to start something, trying to get Dave off. In the 2nd session, we worked her off Kona, and taught her how to be ponied. In the 3rd session, I rode her in the round pen, and we treated her like a colt being started. She had to go forwards and turn. That was all; nothing fancy, no shoulders in, just go. And she did ok, but she started trying to get out of it and get me off balance.
I'm attaching some pictures of Dave and me and Kona working with Paloma. The best thing was Kona - she has turned out to be the greatest useful all around horse! and she likes bossing the young horses around, particularly Paloma.

Since Dave's visit I've been thinking about what to do. Paloma has many tricks up her sleeves, and she seems determined to use all of them and "whatever it takes" to get out of the work, to get away from the pressure, even if it's not much pressure at all. I don't know what's going on in her head, but I don't think I have the timing or the reactions to get her through this.
After a long talk with Susan, I've decided I need to send her away to someone who can ride her through this. I hope she can learn that being ridden is nice, it's good, and it's not going to put her into a scary situation. Otherwise, I'm not sure what I'll do with her.
Dave has referred me to Steve Bauhr, and tonight I talked to Steve about Paloma. I hope I didn't scare him off with my description of her antics! He said he could take her in January, and we're going to set up a date for him to come all the way to Winters to meet us. He sounds a lot like Dave.