“Delighted that @streetchilduk feature as next week’s @bbcradio4 #R4Appeal.
“Listen via https://www.bbc.co.uk/programmes/m0004sh0 to hear the heartbreaking story of Fatima who was abducted by Boko Haram and held captive for five years.
“Now supported by Street Child, Fatima is going to school for the first time and having counselling to help her deal with the trauma of her experiences.
“With your help @streetchilduk can continue to help those affected by the Boko Haram insurgency to rebuild their lives and provide children just like Fatima with an education #streetchild #nigeria @bbc #bbcradio4.”
Fans rejoiced Fergie's efforts.
One commented: “Hugely admire your work and wonderful strength of character.”
Another said, “Your Highness Sarah Ferguson you are an angel spreading your light through your service."