As I had written after my father's death last year, 40 days after a person's demise is very important in the Orthodox Christian tradition.
The official end of the mourning period for my mother was on 24th. Somehow getting through the 23rd and 24th were very difficult for me. It is such a relief that that's over. I know I will miss my mother, but somehow my heart feels lighter. May her soul rest in peace.