The mother of a young woman who killed her abusive partner believes her daughter should have her murder conviction quashed in the wake of Sally Challen’s appeal.

Joanne Smith, 48, is “hopeful” that Emma-Jayne Magson, 25, will win an appeal, expected later this year, after being convicted of murdering her boyfriend in March 2016.

“I was so happy [when Sally’s conviction was quashed],” said Mrs Smith, who was in court last week to support Mrs Challen.

“I felt so emotional and thought, ‘One day that might be my daughter.’

“I was a bit happier when Emma was granted an appeal, but this has given me so much more hope.”

The case of Magson, the mother of a four-year-old daughter, has parallels to that of Mrs Challen, 65, whose conviction for murder was quashed by the Court of Appeal this week.

The former Police Federation office manager killed her husband Richard with a hammer in 2010.

Magson, a former care worker for Bupa, stabbed her boyfriend, James Knight, 26, in the chest during a drunken row in which he had grabbed her by the throat, hit her, ripped her clothes, and thrown her to the floor.