After 17 years in Largo, she served in Abbotshall Parish Church in Kirkcaldy.
Since March 2017, she has served as the Minister for the parish of Bowden and Melrose in the Scottish Borders.
[2] On 19 December 2022, she conducted the funeral of Doddie Weir in Melrose Parish Church.
[3] On 31 December 2024, it was announced that Frew has been nominated to serve as the Moderator of the General Assembly of the Church of Scotland from 17 May 2025, until May 2026.
[2] Her Principal Clerk will be Fiona Smith who had welcomed the appointment of Lady Elish Angiolini as Lord High Commissioner to the 2025 General Assembly.