The photograph of zero standing with what looks like a family group of Indonesians has been around for quite a while, but it was never captioned, and I haven't seen anything that clearly identifies her as the mother of Lolo, nor who the girl in the doorway might be.
All we can be sure of is that the woman with SAD holding the baby and Madelyn IS the same woman in both:
And there are a couple of young girls in that group image.
In her book about Ann, Janny Scott identifies the lady in the photo with Madelyn, Ann, and baby Maya as Lolo’s mother. I’d forgotten that. You can see the caption on a preview on Google books, but the photo’s no longer seen.