May her soul continue to rest in peace. I believe time heals all wounds. Although you may never stop missing her, the pain will reduce with time. You can take solace in the fact that she's now in heaven, dining with angels and free of cancer pains.
Most importantly, for three reasons, try to forgive your family members for not telling you. #1 reason - Nobody is eager to share bad news. #2 reason - they must have been living with the guilt since she died. #3 reason - It makes you feel better and it makes your heart lighter when you forgive and let go.
Finally, my prayers are with you and your family.
Thank You 💔