Hamilton was a member of the Anna Sloan rink that won a gold medal for Great Britain at the 2011 Winter Universiade. Hamilton played as the team's alternate. In March 2011, Hamilton played third for Sloan at the 2011 Capital One World Women's Curling Championship, along with Vicki Adams, Rhiann MacLeod and Eve Muirhead as alternate. They finished 9th.
Sloan joined forces with Muirhead after that season, with Hamilton becoming the team's lead and Adams playing in second position. They had quick success, winning the gold medal at the2011 European Curling Championships. However, they were not as successful at the 2012 Ford World Women's Curling Championship, placing 6th.
Team Muirhead won gold medals at the 2013 World Women's Curling Championship in Riga, Latvia, with Lauren Gray as alternate. The team has also been selected to represent Team GB at the 2014 Winter Olympics in Sochi, Russia.