Loose Women. Now, the star has bravely opened up about believing she had killed her firstborn.Frankie, 32, has revealed that following medical advice, she had taken son Parker, now seven, to receive his chickenpox vaccination before he had turned one.However, the former The Saturdays superstar explained that following the horrific ordeal, she was left ruined with guilt following conflicted advice.The mum-of-two claims that she felt guilt before having a breakdown, believing she had killed Parker before he experienced life.Putting pen to paper in her new book, Grow: Motherhood, Mental Health & Me, the singer reflected on the turbulent time in her life.The star who found fame as a member of S Club Juniors wrote: "The guilt and fear I had felt.