Sorry... I don't have any concrete resources, but this sure would be an excellent topic for an article in Mothering (ahem, are any of the Mothering mavens listening?
You would have to scour the archives for this thread, but I recall that occasionally some mamas have posted about some of the natural parenting techniques, such as cranio-sacral therapy,that they used in the NICU.
One other consideration would be to hire a midwife just for maternal support during your pregnancy. Of course, you wouldn't leave your peri, but you may be able to find a midwife or doula who would see you for regular exams and offer you a more holistic and personal approach to your care. My midwife said that she would happily take this approach with me during my next pregnancy (assuming I'm high-risk).
I had the same question after my c-section and DS' NICU stay. I often wondered if mamas and babies who were high-risk even had a place in the natural parenting community, because it's so hard to find resources and support.
I'll search around or other resources. If anything comes up, I'll let y'all know!