Club Mid-Ulster Magill began her football career in the development programs of
Cookstown Youth FC and
Mid-Ulster Ladies F.C. where she first played with an all female squad. During the 2010/2011 and 2011/2012 seasons, Magill would claim awards for the
Northern Ireland Women's Premier League Player of the Year honors. She also finished the 2012 season as top goalscorer with 18 goals. Suffering injury, Magill was sidelined for much for the
2016 season, but returned during the
2017 Spring Series scoring 5 goals in just 7 appearances. She was the second Everton player to do so and the first female
Northern Irish footballer to sign a full-time contract.
Aston Villa On 6 July 2022, Magill was announced at
Aston Villa on a permanent transfer.
Birmingham City On 15 August 2024, Magill was announced at Birmingham City on a two year contract. Whilst at Birmingham City, she was studying a PHD in Sociology in football, with ambitions to become a director. ==International career==