"They called her a miracle girl because she survived even though the odds were stacked against her."
Millie said she felt "really yucky" at times and the only things that kept her spirits up were the toys and the knock-knock jokes told by one of the doctors.
Cowan said Millie was now in remission, but there was a 40 per cent chance of the cancer returning.
Having not had the opportunity to go to kindergarten, Millie was most looking forward to making friends and playing with people her own age. With a few knock-knock jokes up her sleeve, it is unlikely she will have any problems making new friends.