Ms Carr-Gomm died at Cleeve House in Seend, Wiltshire, in October 2016 while taking part in the Paida Lajin therapy event.
Ms Carr-Gomm, from Lewes in East Sussex, had Type 1 diabetes, meaning she had to take insulin every day to keep her blood glucose levels under control.
Yet she had a lifelong fear of needles and had frequently sought other ways to deal with the disease.
Paida Lajin, which means “slapping and stretching” is a therapy in which people slap themselves and others in order to expel toxins from the body.
Ms Carr-Gomm believed it worked and delivered glowing testimonials, the court previously heard.
The court heard that Xiao said “well done” to Ms Carr-Gomm, after she told the participants that she had stopped taking her insulin at the week-long retreat.
By the third day “she was vomiting, tired and weak, and by the evening she was howling in pain and unable to respond to questions”, prosecutor Duncan Atkinson KC said.
Ms Carr-Gomm, who was diagnosed with type 1 diabetes in 1999, was “howling in pain” and “frothing at the mouth” as she became seriously ill before she died on the fourth day of the workshop.
Xiao was extradited for the trial from Australia, where he had previously been prosecuted after a six-year-old boy also died in 2015 after his parents stopped giving him insulin.
