I'm so sorry for your loss. Keep your head and keep talking to us.
I may know of something that may ease your pain. Cranio-Sacral Therapy. Check out Upledger Cranio-Sacral Therapy. CST is good for so many things. It is our core body system, encapsulating the brain and spinal cord.
While it's discovery was somewhat incidental, one of it's immediate "benefits" was for chronic headaches.
It is also excellent for "somato emotional release". It will help turn the"voice's" in your head that are guilt tripping you down to a tolerable level.
You didn't "do" anything to cause your Angel's death.
I practice CST because I had cluster headaches, and the Physical Therapist that my Mom turned me onto fixed them. That got me seriously turned on to the work.
This in no way compares to a child's death, but after the headaches went away, my girlfriend of a few years broke up with me. She was bad about it too, sending me pics of her and her new boyfriend in fragro delicante.
I went in and saw David (the PT) and told him I'm sorry to waste your time like this, but my heart is broken and her voice is screaming at me at about an 11.
After 30 minutes on the table, I could still hear her, but the volume was down to about 2. I then proceeded to spend about 50K to learn what this healing is all about, and to be able to legally (put my hands on someone) and put it into practice. I'm now known as the headache killer and the heartbreak fixer. However it's God's healing touch through my hands and nothing that I am doing , other then getting out of God's way.
I'm so leery of putting this out on a public board, but your pain touched me, and I couldn't not respond. God Bless you and Family. If you go to Dr. Upledgers website, look under "find a therapist". This can be done with no drugs, no dialog, and it may help
Peace to You