Hi Hilary,
in a balanced diet, I don't think lack of nutrients should play a role. But if she felt hungry/starving this can have been a conflict.
What palsy symptoms are we talking about? Were they not noticeable during the first 18 months at all? Then I'd doubt that the conflict happened during pregnancy, as there are other possibilities to be ruled out. In this [https://www.mayoclinic.org/diseases-conditions/cerebral-palsy/symptoms-causes/syc-20353999#|medical description], several coincidences are named that could give us cues. Do we know if any of these apply?

Do you know the story of a case of Down syndrome Dr Hamer shared? Here, 2 noise conflicts caused a constellation with retardation of the brain development. The mother had worked on a building site during the first weeks of pregnancy, and the father hat a mechanical workshop with noisy machinery right at home. Desensitizing the child with ear protection during several months saw her recover the paused development.