The mother of murdered teenager Brianna Ghey has said she does not “carry any hate” for her daughter’s killers, as she called for social media apps to be banned on smartphones for under-16s.Scarlett Jenkinson and Eddie Ratcliffe were both 15 when they killed Brianna, 16, with a hunting knife after luring her to Linear Park, Culcheth, a village near Warrington, Cheshire, on February 11 last year.Jenkinson had watched videos of torture and murder online.