Jen, I only know what that comment means because you pm'd me the sad news of your Mum's death.
I don't know what to say other than I already told you. She'll be at peace now, and hopefully that peace will filter down to you. Be grateful you were all with her at Christmas, and that your sister came home from India.
Your Mum was blessed having such a great daughter. You should be very proud how you've coped with such a difficult illness.
My thoughts are with you at this very sad time. You will always have your Mum in your heart. Cherish the good times and Know that you did your very best to make her life good.