Carlie, aged 11, and three of her school friends set out to raise cash for the Hoi An orphanage near Danang.
The girls - Carlie, Nicole Dawson, Kayleigh Whittaker and Lucy Oates - raised £200 through a raffle at Rainbow Forge Primary School, Hackenthorpe, a door-to-door collection in the neighbourhood and a sponsored walk near Hathersage.
They heard about the orphanage's desperate need for funds from Carlie's mum, Fiona Dennison, a mobile hairdresser.
One of Fiona's clients is May Seed, from Fulwood who, with husband David has been co-ordinating efforts to help the 70 or so children and young adults at Hoi An.
Fiona, of Valley Road, Hackenthorpe, said: "When May told me about the fundraising, I suggested we should get a raffle going. Carlie wanted to help and she and her friends had a stall at school selling tickets."
May and David Seed have friends in Durham whose son, Nick Keegan, is financial director at the An Hoi orphanage.
Many of the children are suffering from the effects of the war, 30 years ago, some disabled as a result of their parents' exposure to the Agent Orange defoliant used by the Americans to clear the jungle in the their search for the Viet Cong.
The orphanage, although nominally under the care of the Vietnamese government, struggles to survive.