I definitely understand the need to find all the supplemental/dietary changes to address trauma, but I want to encourage you with therapy and lifestyle actions.
Maybe you already know this and gainful strides are taken, but your friend needs therapy to begin processing the grief and suffering well, while at the same time, getting surrounded by friends who will take her on bike rides/tennis/whatever the thing is she likes, that promotes getting the body in a productive energy-outletting state, in the most uplifting way possible given the circumstance. Yes, this is getting one free from constant dwelling on the matter - no, this is not numbing the pain or delaying the healing process - believe me, every moment of solace can bring all the feelings flooding back (which is needed and not to be pretended away). The purpose of activity, is introducing balance for the physiology, which is similar in function, to supplements/drugs for depression - I found drugs/supplements not good enough to handle the harshest trauma in my life.
With that said, I wouldn't hesitate to hop on some GABAergic promotors and serotonin antagonizers. Progest-E (if your due diligence suggests that's an acceptable course of action at the moment) will help the body and mind in the processing - which I don't consider the same as escapism - aka Progest-E is a valuable contribution IMO.
Whether your sleep problems are caused by acute traumatic abuse, or chronic stressors over the years, dietarily, the answer would be the same to both:
- All the clean ice cream before bed.
- Lowered protein intake before bed (this almost always works almost immediately, nevertheless, some nights I just needed a junky PUFA laden Mediteranean takeout and stuffed myself with the icecream after - definitely over eating - but I slept like a baby the following night).
- Play around with great lakes gelatin doses before bed - more the better, but you don't want to get too much, as I seem to remember, it can elevate ammonia - the sweet spot being 30-40% of total protein intake.
- Vitamin K2 MK4 before bed (I suggest topicals from Georgi's idealabs).
- Vitamin D3 before bed (idealabs too) (I suggest taking a calcium supplement with it to prevent elevating PTH, further improving sleep).
- 1/2 microgram or less of cyproheptadine before bed.
- Red Light rich environment before bed.
- High salt intake.
- Caffeine all day.
- Aspirin dissolved with a little baking soda in the morning (can complicate blood thinning with cypro so needs to be taken apart) (take with glycine to prevent glycine depletion).
- Emphasize sugar carbs over starches (juices like you mentioned).
- Foods that taste good.
- Paradoxically, given I suggest plenty of icecream, for the majority of meals otherwise, trying lower fat should help the liver with it's current burden (clearly indicated by lack of sleep).
If y'all have a solid handle on taking thyroid hormone, cynoplus and cynomel could be good additions (t3 helps heal the liver; t4 lowers adrenaline) - consult Danny's recent video.
Consider researching 10-methoxy-harmalan and/or metergoline. RPF had people discussing all potential complications and other supplements not to combine with.
https://peatarchive.com/
So sorry this has happened. I don't pretend to have suffered the same trauma, but catastrophic emotional events moving one to the point of an almost bedridden will to die, with inability to sleep at night... I'm all too familiar with. I hope and pray for Her and all the people in her life helping. Thank You for what you're doing 
