turmeric and ginger are both good for inflammation.
Vit D...beyond the RDA recommendation has been found to be good for those w/ fibro and nerve pain. it has been found that some "fibro" pain is actually a D deficiency...softening of the bones mimics the same pain.
But w/o enough vit D, her body will be leaching calcium from her bones (which leads to the softening), like LF said.
FOr pple who are deficient in vit D, they are starting to recommend 2-3000 IU / day, instead of the standard 2-300 IU to maintain a normal level.
Capsaisum lotion/ gel can help w/ achiness in joints/ muscle. I dont think it'll do much for bones, per se.