Kouri Richins poisoned her husband Eric with a fentanyl-laced drink after racking up debt and taking out life insurance. Photo / FacebookKouri Richins poisoned her husband Eric with a fentanyl-laced drink after racking up debt and taking out life insurance. Photo / Facebook

Kouri Richins (centre) was also found guilty of fraudulently claiming her late husband's life insurance. Photo / Getty ImagesKouri Richins (centre) was also found guilty of fraudulently claiming her late husband’s life insurance. Photo / Getty Images

Richins' sons, now cared for by Eric's sister, pleaded for her to remain in prison. Photo / FacebookRichins’ sons, now cared for by Eric’s sister, pleaded for her to remain in prison. Photo / Facebook