Prayers and sympathy are with you, Amanda...
My mother was 54 when she died of pancreatic cancer. Losing your mom is never easy at any age.
Just let me say that Liam will have many opportunities to know about his Nana from the ones who loved her so. My girls have loved hearing stories and seeing pictures and video of the grandmother they lost. I know Liam will, also.
(((BIGHUGS))) and know that others care.
God bless you~