She said she could need a stem cell transplant if her illness relapsed in the future, but her Mauritian heritage could make it harder to find a match.
She has been working with the charity Anthony Nolan, external to raise awareness of its stem cell register among people from minority ethnic backgrounds.
The charity says patients from diverse backgrounds are more likely to have rare tissue types which can make it harder to find a matching stem cell donor.
Just 16% of registered donors are from non-white European backgrounds, according to Anthony Nolan.
Mrs Lake said it was “absolutely heart-breaking” some people could not find a donor.
“I’ve done a lot in my life, but there are kids in hospital that are just starting out.
“If you click on to the Anthony Nolan website and just give your details, you could save someone’s life.”
DKMS, external – another charity – runs a stem cell register too, and blood donors can also join the register while at a blood donation appointment.