‘When I see kids vaping, I warn them: that’s what killed my daughter’

The mother of a teenager who died after her lungs collapsed believes e-cigarettes were the cause and is calling for tougher legislation

Teenager Rosey Christoffersen loved football from an early age, with her enthusiasm matched by a talent for scoring goals. She attended regular training sessions and played weekly fixtures with a local club, but became alarmed one season over her rapidly declining fitness.

I'm gassed," she would tell her coach at Wallasey Wanderers in Wirral as she struggled with exhaustion, asking to be pulled off at half-time. She was also complaining to her family of pains in her chest.