 In March 2019 she was appointed as the party's senior adjudicator for Scotland.In 1989, Grieve served as a member of the Scottish Constitutional Convention, which crafted a framework for Scottish devolution.During the 2014 Scottish independence referendum, Grieves initially supported the "no" side, but was motivated to change her vote to pro-independence after seeing the advert by the Better Together campaign titled "The woman who made up her mind".