Unless the child lived with you and your husband for the entire year, you may not claim the dependency exemption because you are not a blood relative. In addition, you would have had to provide more than half her support. The original answer misinterpreted the facts of the situation, and assumed the child is your biological daughter. It was a confusing question.
@TurboTaxColeen - check your answer here. The parent writing the question is not the mother of the child.
