"It is our strong belief that Wakefield Children's Social Care failed our daughter by not providing the appropriate level of protection and support for Kimberley and her sister, " she said.

BBC: Ahmad Otak jailed for 34 years for murdering two teenagers

States have an obligation to create and maintain adequate measures at the national level, in particular in the fields of education, health and social support, for the promotion and protection of the rights of persons in vulnerable sectors of their populations and to ensure the participation of those among them who are interested in finding a solution to their own problems.

UNESCO: Vienna Declaration and Programme of Action