Tweed was born in Ayr, in the west of Scotland. She obtained her first degree at the Paisley College of Technology (now the University of the West of Scotland) and then gained a post graduate housing qualification from Heriot-Watt University. She then worked for various housing associations, gaining senior roles mainly involving building social housing. Tweed was a member of the Board of the Chartered Institute of Housing Scotland from 2007 to 2009.
In June 2022 she apologised after being photographed holding the flag of the ultra-nationalist group Siol nan Gaidheal.[4]
Member of the Scottish Parliament
Tweed was selected as the SNP's candidate for the Stirling constituency in the 2021 Scottish Parliament election. After a successful campaign, she succeeded retiring MSP Bruce Crawford, as the MSP for Stirling.[5] She is the Deputy Convener of the Education, Children and Young People Committee.[6]
Personal life
Tweed lives in Stirling with her husband, and their children.
She enjoys running and reading in her spare time.[2][7]