Request: Girlfriend about 1 year into recovery for anorexia - her anxiety is through the roof and shes struggling hard with sleep, getting a couple hours night. Anything to try?

She has a very defined sleep routine: She keeps her place dark and quiet an hour or so before going to bed, turns off all electronics, goes to bed really early (9pm), avoids caffeine.  Every night she falls asleep for 2-3 hours, wakes up exhausted, and cant fall back to sleep all night. 

She's tried CBD, low %THC, her old prescription for Benzos, herbal stuff like teas and sleep pills, and nothing works.  Im worried, because it has been weeks and doesnt seem to be getting better. She has a full team helping with recovery, including CBT and trauma therapy, a naturopath, and a therapist.

Has anyone else gone through this? Any suggestions?