Third parties-those who are not a child’s biological, or “de facto” parent- can sue for custody in the District of Columbia under the Safe and Stable Homes for Children and Youth Act of 2007 (the “Act”). D.C. Code Ann. Secs. 16-831.01 to -831.13, 4-251.0 to .04, 23-2301 (2009). A parent may move to dismiss a