Sarah underwent chemotherapy before receiving a stem cell transplant from her brother Colin in 2016.
She later returned to playing and umpiring hockey, 10 months after her transplant.
“Hockey has been a huge part of my life and a huge factor in who I am,” she said.
“To have all this to return to, and to have done so much since my leukaemia, makes me so grateful.”
Fiona Hazell, chief executive of Leukaemia UK, said: “Most of the signs and symptoms are not specific, so can often get mistaken for other illnesses or be explained away.
“Early diagnosis saves lives.
“That is why we encourage anyone with symptoms to make sure it’s nothing serious by speaking to their GP and asking for a full blood count test.”
Follow BBC Kent on Facebook, external, X, external, and on Instagram, external and listen to BBC Radio Kent on Sounds. Send your story ideas to southeasttoday@bbc.co.uk, external or WhatsApp us on 08081 002250.