These pictures show Francesca's transition from a "normal" seven-year-old, to the gruelling treatment stage where her femur and knee were replaced with a metal rod, and finally back to a healthy teenager who uses her experience to raise money for charity.
She says if more research is dome and awareness is raised, this could be the story for other children too.
More top news
According to a travel website, the seaside town ranks ninth, alongside the likes of Damascus in Syria as well as Pyongyang in North Korea.
Emma Jesson has the details.
Operation Shimmer is targeting the minority of cyclists in the city who cause a danger to themselves and others by cycling without lights.