Millie’s family are now working with blood cancer charity DKMS to encourage more people to register as donors and hopefully find her a match.
Hayley said: “I feel like getting the word out has given me some power to do something good in all this.
“Please think about signing up. It could change someone’s life, maybe even my daughter’s.”
DKMS spokesperson Bronagh Hughes said: “For Millie and patients like her, a total stranger joining the register could give them their lives back.
“It takes 10 minutes of your time, but you could be the match that Millie, or someone else like her, is waiting for.”
Additional reporting by PA.