Who can contest?

Typically, only parents. However, there are some instances where a relative might have standing to contest. There are some situations where a previous legal guardianship might come into play, and some states recognize grandparents rights to visitation if the child has developed a relationship w/ them. Also, if the children involved are Native American, grandparents and tribal members may have standing to contest, because the federal Indian Child Welfare Act would apply. That act dictates that Native American children must be placed in a preference order: 1) Within the family 2) Within the child's tribe or 3) Within another Native American tribe. Absent that, a step sister to a grandmother is not likely to have standing to bring any kind of contest. I think I'd hold off on any full blown panic for now.