First thing you can do is take care of yourself. Emotionally, physically, professionally.
You are eating better. Good job.
Skip the walking, how about joining a gym? A Karate dojo? Something intense that will help you burn off the stress, focus and cleanse the mind/spirit. Pick something that will match your personal intensity.
Get your resume together soon. Put the business on a small hiatus and get a full time job. Steady income reduces the stress. With the FT job often comes decent medical benefits, which might include coverage for counseling.
That's what you need to do. First and foremost. Take care of these things and you'll be OK regardless of what she does. But as these things get more integrated in your life, you'll be more buoyant and, therefore, able to be more playful and light in your spirit, which will, eventually, help her break out of her funk.
Don't even try the Deida stuff now, you are too beat up. Even Deida says unless your purpose/mission is clear, you can't break through to her. Right now, your break though efforts will come across as a weak attempt to rescue her grounded in a fear of losing her. Sink into your chi first. You need to restore your personal power before you try to ravish her with you focused, self-confident and passionate love. Right now you're in emotional free-fall, having bouts of depression, in financial stress, having career issues, having panic attacks, and probably experiencing some kind of hypoglycemia.
First things first.
The Deida stuff needs to be enacted in a fun and playful manner. Right now your about as buoyant and compelling as Eyore.
Get some GAL under your belt and then have fun with the Deida stuff. I don't think your relationship warrants a "Last Resort Technique" approach. She's confused. It's OK to talk and engage.