So very sorry to hear of your loss, CC. A tough year made tougher still.
I've lost my whole family save for my sister, and a wife. It's so very hard and so very final. Through my experiences I can only offer this:
IF it was up to me, they'd still be here. Unfortunately it wasn't up to me, so I have to live in Faith that this is all working to a plan I will never know, and they are now in a wonderful place and would insist we carry on, until it is out time to meet them again.
All the Best,
JW