Your father or you could adopt the child. The child would be able to derive immigration benefits through the adoption if the adoption is finalized prior to her 16th birthday. If the adoption is not finalized prior to her 16th birthday, she could not derive immigration benefits through the adoption. There are many requirements for an adoption to be recognized by USCIS. You can read more about intercountry adoption at https://travel.state.gov/content/adoptionsabroad/en.html.
Answered on May 27th, 2016 at 2:16 PM