Could women with vitiligo still have healthy babies?

Yes. Vitiligo (v) is an autosomal dominant disorder with variable penetrance (some worse than others).A mother can pass the gene to her kid or pass the normal gene with 50/50 chance per conception. Children acquiring the v gent would eventually show some patches as they age & the baby with the normal gene would be unaffected. Other than the skin issue, the babies are normal.