David you are one super son,
I understand exactly what you are going through as I lost both parents to bone cancer. My father 18 years ago at 61, and my mother last March at 73. Both were not just my parents but really good friends and mentors in my life.
from your link in the first post the lines:
Mum’s heart nearly exploded when Nigel sat down with his class of schoolchildren and each sent her an individual Christmas card with a fact relevant to the festivities. One child poignantly wrote inside “Don’t worry Jenny, you are not alone”.
Has had me sobbing for over 1/2 hour as its just so simple but so caring.
Tomorrow once I’ve pulled myself together I’m sure I can dig something out to send to both your mother and then to yourself that would just for a brief moment distract you both.