Don't go to Karen's journal unless you've got 3 or 4 hours to read and it doesn't matter if you're sitting there crying your eyes out at it.
The most moving thing of all isn't even in her own journal - it's in her friend
And I keep thinking of the Sandman story, where Eurydice is dead and Orpheus goes to ask his father Dream for help in speaking to her again. And Dream, the old Morpheus, doesn't understand why he is upset, and says:
You are mortal: it is the mortal way. You attend the funeral, you bid the dead farewell. You grieve. Then you continue with your life.
And at times, the fact of her absence will hit you like a blow to the chest, and you will weep. Buty this will happen less and less as time goes on.
She is dead. You are alive.
So live.