You are right. They chose Sherin! So how does that work? Do they give prospestive parents a list of children available and the parents pick the child?
My experience is more with domestic than international adoption, but in fact there are profiles (used to be books of them that were sent to local agencies and adoption groups) of children or sibling groups. Helpful to allow families to express interest in addition to relying on the wisdom of social workers across multiple systems to match children and families. Expressing an interest may or may not result in a match, but it does help to open conversation, may help to make another county agency aware of a family with an interest/willingness to consider some specific (sibling group, particular health issue, etc). I believe some agencies use video interviews of children. It's sort of a dance. You don't want kids to feel that they are on display (or being rejected). On the other hand, families can more honestly assess their resources/abilities when faced with an actual child--instead of a list of problems (something else that prospective adoptive families are asked to do).