Mom finds out her foster baby is her adopted son's sister

Video Description

One mom got the shock of a lifetime after discovering the child she was fostering was the biological sister of the son she adopted -- so she adopted her as well. LEARN MORE: https://gma.abc/2FurPNa SUBSCRIBE to GMA ► https://www.youtube.com/channel/UCH1oRy1dINbMVp3UFWrKP0w/subscribe To read the full story and others, visit http://www.goodmorningamerica.com Good Morning America (GMA) brings viewers an award-winning combination of breaking news, exclusive investigations, hard hitting interviews, weather forecasts, cutting edge medical field information, and financial reporting every morning. Join Robin Roberts, George Stephanopoulos, Lara Spencer, Michael Strahan, Amy Robach and Ginger Zee weekdays at 7am on ABC. Follow GMA across the web-- Facebook: https://www.facebook.com/GoodMorningAmerica Twitter: https://twitter.com/GMA?ref_src=twsrc%5Egoogle%7Ctwcamp%5Eserp%7Ctwgr%5Eauthor Instagram: https://instagram.com/goodmorningamerica/?hl=en