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Mared Parry says she was targeted when she was just a teenager by sexual predators online.
Devon and Cornwall Police have recorded 94 online grooming offences against children in just 18 months, according to the NSPCC.
The data was obtained through Freedom of Information requests from 39 of the UK's 43 forces - with more than 5,000 offences being recorded in England and Wales in the time frame of between April 2017 and September 2018.
The NSPCC said it was urging ministers to bring in statutory regulation to enforce a legal duty of care to children on social networks, backed by hefty fines if they failed.
Police said they investigated any report of a child being abused or sexually exploited.
The National Crime Agency said it was "vital" online platforms used by children and young people had in place "robust mechanisms and processes to prevent, identify and report sexual exploitation and abuse, including online grooming".