Greensboro, North Carolina (CNN) -- The wife of a former top aide to former presidential candidate John Edwards defended in testimony Tuesday having shot video in September 2008 of the house and possessions of Edwards' pregnant mistress. "I wanted proof that I really was taking care of Rielle Hunter," said Cheri Young, whose husband, Andrew, was a top aide to the then-candidate for the Democratic presidential nomination, who is now facing federal corruption charges. Defense attorney Alan Duncan showed the jury the videotape of the North Carolina house leased by Hunter, who was in California and had not given her consent to the taping. A number of personal pictures, Hunter's California driver's license and a tentative list of baby names were shown to the camera.NEW: "Things had gone sour" with Edwards, Cheri Young says"I wanted the truth to come out," she addsThe former presidential candidate faces federal corruption charges
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