Madonna met Mercy James, now 3½ years old, at the Kondanani Children's
Village, when she visited Malawi for the first time in October 2006.
She expressed interest to adopt Mercy then but instead adopted David
Banda, now 3, from Home of Hope orphanage in central district of
Mchinji on the border with Zambia.
Read the rest here. Or don't. The article is as brief as her home study process.