article_snippet.sent: Ms Catherall was jailed for a minimum of 17 and a half years in February .
article_snippet.sent: Ms Catherall only called paramedics the following morning and claimed Ms Catherall thought Ms Catherall was sleeping, but later admitted murder and was jailed for life in February.
article_snippet.sent: she had denied killing she girlfriend when interviewed by police, but in December last year admitted the murder.
article_snippet.sent: Mr Justice Wyn Williams, hearing the case, said she subjected Ms Catherall 'to a ferocious, sustained and in the end deadly attack'.
article_snippet.sent: Mr Justice Wyn Williams was sentenced to a minimum of 17 and a half years in prison.