By Brandy McDonnellAll the practice and performing has really paid off for Oklahoma singer and ventriloquist Darci Lynne Farmer.As previously reported, the reigning winner of "America's Got Talent" returned to the top-rated TV talent contest Wednesday night to perform during the first live results show of Season 13. The 13-year-old performer from Oklahoma City once again brought along her diva bunny puppet pal Petunia, who was dramatically pleading exhaustion as they took the "AGT" stage.Read more on NewsOK.com