OJ, firstly .
secondly......would you think about maybe either going onto AD's for a very short time, or sleeping tabs for maybe a week, just to get your body back into a rythm again??
after my car accident 2yrs ago, I suffered PTSD and panic attacks, and basically stopped sleeping at all.....leading to depression.
my friend (flame in fact), forced me to the docs, and the prescribed AD's for me, which I fought and fought against taking (for me it was an admission of defeat).
anyway, they were of a type that also contained a mild sleeping tablet.....and I was prescribed just one months worth.
for the short time I took them, they helped me get back my sleeping ability, and once I was able to sleep, so I was able to start dealing with things again, and also deal with the panic attacks.
now, I know your grief is far far stronger than anything I went thro, and I can comepletely indurstand your not wanting to mask your feelings, but maybe just a short burst to get your body able to sleep again might help???
sleep deprivation is, IMO, one of the worst things to go thro, (especially on top of grief and still dealing with your children/life) as it alters your reality slightly and then anything you feel or go thro is far far worse than if you were able to sleep IYGWIM.
anyway....many more hugs. you are an amazing lady, I hope you manage to relax a little.