[1] She was selected along with Riches, Smith, Roe and van den Broeke, to represent Great Britain at the 2012 Summer Paralympics in the mixed coxed four event.

[2][6] The event took place from 31 August to 2 September at Eton Dorney,[7] where team GB won the gold medal.

The GB LTAM4+ crew retained their World Champions crown in August 2013 at Chungju, South Korea.

In 2014 Relph and crewmates Hester, Fox, James and Grace Clough successfully defended their LTAMxd4+ World Champion status in Amsterdam with the same crew going on to repeat this feat at the 2015 World Championships at Aiguebelette, France, defeating the American crew by.26 of a second in the Final.

Relph was appointed Member of the Order of the British Empire (MBE) in the 2013 New Year Honours for services to rowing.