Greetings: I'm very sorry for your loss. I went through a similar situation and I was very helped by the hope that I found in the Bible in John 5:28, which says, "Do not amazed at this, for the hour is coming in which all those in the memorial tombs will hear his voice and come out". I am sending you a link with more information on this hope.
https://www.jw.org/finder?pub=w14&issue=20140101&wtlocale=E&srcid=share