The book, (Other than Psalms etc.) that has spoken to me most in such trauma times is THE BROKEN WAY by Ann Voskamp. Her prose is so elequent as to equal poetry. And she has lived every word she write.
I've lived enough such many times over to know that what she writes about THE BROKEN WAY is the Gospel Truth. I don't know any other way than through.
There is no running from such. There is no ignoring such. Sometimes we can learn from such--hopefully whenever we find ourselves in that desolate desert.
Yet, often enough, there appears to not be much new to learn. We've traveled so many tortured roads by our ages that most of the lessons available are old hat.
Nevertheless, THE BROKEN WAY is the best I can suggest; the most I can offer. And, there is a redemptive sweetness in its pages that can be exceedingly comforting fostering much needed rest and release.
God's best to you at this time and always.
I would also recommend “Why bad things happen to good people” by Howard Kushner.
Kushner is a rabbi but I found nothing that wasn’t applicable to Christian belief as well.
After my son passed this was gifted to me and after a few months I finally read through it. It definitely helped to mend wounds.