Jade's mum Jackiey Budden, her widower Jack Tweed and her personal trainer and close friend Kevin Adams attended a service held at a funeral parlour near Jade's former home in Bermondsey, south east London.
The group moved on to her final resting place in Upshire, Essex, where a silver time capsule – containing locks of Jade's hair and personal letters - was due to be buried next to a new memorial stone.
Jade's sons Bobby, six, and five-year-old Freddie were not at the service.
The boys' TV presenter father Jeff Brazier, who now has full custody of them spoke of how they are coping on a documentary shown on Sunday night.
"A few weeks ago Freddie was sat on the stairs and just was crying so I rushed out there and he just screamed, 'I’m missing Mummy'," says the 30-year-old.
"He's going to seem fine for periods of time but every now and again he might hit that emotional brick wall and need a good cuddle and a good cry.
"Bobby, however, is probably more likely to feel it’s somehow insensitive if he really cries about mum. Whenever we talk about mum he always smiles and gets involved in the conversation.
"I think Jade would be happy with how the boys are doing."
Jade died on March 22 last year after losing her battle with cervical cancer.