Doctors in York Hospital carried out a gastric band procedure, but complications from the surgery caused liver and kidney failure in Ms Greaves, eventually resulting in her untimely death.
Anne Greaves, the mother of the deceased woman, is now urging caution before opting for weight loss surgery.
"She didn't have this operation through vanity, she did it for her daughter. She had just started nursery and even though Kerry had never been bullied because of her weight at school, she thought other kids might pick on Melissa because her mum was big," she said. "I tried to warn her about the dangers but she was insistent and told me that everything would be OK. My advice to anybody thinking of this operation would be to have more pride in yourself and don't do it."