A Family Court judge has declined to make a finding that a teenager had been sexually abused in a case where the girl disappeared in the middle of proceedings and the judge said her incomplete testimony had been insufficiently corroborated.

New York City’s Administration for Children’s Services maintained that “Ruben R.” had sexually abused his 17-year-old stepdaughter, “Sabrina F.G.,” from age 5 and that Sabrina’s two younger siblings had been abused or neglected, and that Sabrina’s mother, “Melody R.,” knew or should have known what was happening.