Z and I started with the trailer and building her confidence standing in the stall. I did not close the panel but asked her to be where she would need to be for the panel. She's very concerned about getting trapped in the trailer so I've got to help her understand that I appreciate her worries and she can trust me.
Then, I tried a new pad and just did passenger lesson around the barn and playground. She started off wanting to canter, but she quickly settled into a nice trot and we rode around for about 25 minutes. Not the conditioning ride I wanted, but better than nothing. The new pad seemed to do well, so I'll be spending some more time with it to see how it goes.