Her obedience commands were going well enough that just for fun I gave her an off leash work out in the training room. She was wearing her pinch collar and a 6 inch training tab (teeny tiny leash) so that I could correct her if I needed to. She did well and seemed to enjoy it. She still needed a correction for Down every time but not because she was being defiant. She seems to be relying on a correction to confirm what I'm asking her. We worked until I got a couple Downs without a correction at all and then I let her go play.
She is a sweet and sensitive dog but it is important that we don't praise her anxiety and that we (fairly) correct her when she needs it so that she can have confidence in us. She finally seems to really trust me which has made working for me more enjoyable and relaxing for her.