She became known through her involvement with the Malvern Hills Protection Society and helped prevent the Central Plains Water Trust's proposal to build a large irrigation dam in Coalgate.
She has been a senior policy advisor to the Green Party since 2006 and has stood for the party in the last three general elections.
Her candidacy for the 2011 election created significant media interest due to her high placing on the Green Party's list.
Mathers was elected to the 50th term of Parliament, becoming the country's first deaf Member of Parliament.