Sally Roberts said in an interview that her legal team has made an application to appeal against the decision to treat her son Neon's brain tumour with radiotherapy, adding that she intends to sue if he suffers side-effects.
She told the Daily Mail: "I've been told I’m an irresponsible parent. I feel backed into a corner. It is taking away my human rights as a mother. Neon is my son. How dare the state impose their treatments on my son? They are not allowing me as the mother to make these decisions.
"If I’d been given the extra time I asked for to research these other therapies in more detail, things could have turned out differently."
More top news
As North Korea's main trading partner, China's cooperation is critical to any efforts to derail Pyongyang's development of nuclear weapons.
Union boss says he "deeply regrets" the disruption to people's travel plans after several days of talks failed to break the deadlock.
Thousands of people downstream of a dam have been evacuated, but authorities are unable to reach many on the hurricane-hit island.