Just got home- I tried feeding her in the corner, but she just made dive-bombing runs to get a mouthful, then retreat back to the gate. She was better to ride- I pretended I didn't know she was worried so she didn't have me making matters worse. I've moved her to another paddock, as the stress isn't good for her (esp so close to royal show), and she's making ME stressed about her stressing! She settles almost the moment she is taken from the paddock, and works very well in teh far end of the arena.
Thanks for all the advice so far!
PS there could be a monster I can't see

I just really hope there isn't!
