First of all, well met Fusion! It sounds like you are a true brother with honor whom is working to help your Sub progress positively in life. I appreciate you!
@Fudbar really hit the nail on the head with his advice, but I feel I can add some helpful ideas. But the touch thing...very sound! Thank you for sharing that! Taking mental notes on all of this, solid stuff!
It sounds to me like your Sub is suffering from that broad spectrum of trauma labelled 'Codependency'. This is not at all to judge! I am NOT a fan of traditional psychology. This is coming from my own personal experience, and from those of former partners whom had some degree of recovery from 'Codependency'. I am careful not to do more than quote the label, because I myself only use psycho jargon as guideposts--not to define myself and others! (This is not done to minimize this issue at all!) I have learned three basic categories of actions that can be helpful, and really could be helpful to anyone, whether within or without the spectrum of 'Codependent'.
1. Learn: There's a lot of solid research on this disorder. It might be that it's not the real issue, then perhaps she can find out about what is, and learn more about that. The book that I have read which I might recommend (although I'm sure there are many others you might consider) is Codependent No More, by Melody Beattie. But, by all means, whatever research calls out to you two. I myself have done some research to refresh my memory, so it's nice that helping others always helps us, thanks!
2. Mindfulness on Childhood issues: It's been my truth that underlying childhood trauma was linked to later trauma from unhealthy relationships. Mindfulness practice, such as positive affirmations, meditation, or anything that works for her, is always great suggestion to help us heal. As I become more aware of how my issues manifest in my daily behaviors, I find it easier and easier to start heading off patterns before they begin.
3. Visualization of Ideals: I use several tools to stay positive and focused on progressing toward a more ideal internal and external life. I'm definitely not perfect, that's for sure! lol But, I might suggest writing a D/s relationship ideal in an open format. Also, gratitude lists help me to stay aware of the growth toward my ideals. One 'Rule' that has helped Subs in the separation process in my relationships is to "Live Your Own Life. Make your own plans, and stick to them." It's a very simple tool, but once the time is right for action, it has proven powerful as a 'Rule'/priniciple/mantra. The final thing you might try (that could have an unexpected kinky benefit!) is guided meditation! I have a friend here whom shared a story of a sensual guided meditation experience her Dom lead her on (which was hot as fuck! lol), and I'm sure this could be incorporated into a visualization of your future ideal of life (maybe together?).
Anyway, this is all shared with the best intention! I'm no professional, so don't take my word for any of this. I don't know better than anyone, just an equal who's wishing you and her all the very best!
Hope some of this may have helped, take care.