Please accept my sincere condolences! There is no deeper pain than loosing a loved one in death. It cuts deep inside us, leaving emptiness, pain and hurt. Only our Creator can undo the damage done by death. Soon He will do so in a Global Resurrection! John 5: 28-9.
If this appeals to you, please find more information at jw.org.
Knowing the condition of the dead can help you as well. I am pleased to highlight this video on the topic: