hawaii13,

Nobody can predict a timeline for recovery. She may improve in one symptom but take longer with another symptom. There is no single treatment.

Once she start to understand her triggers, she can slowly learn to reduce them and healing will move forward. But, it she keeps triggering symptoms, her recovery will be longer.

It is important that she find a way to get quality sleep at normal times with good head and neck posture. I did best in a reclining chair until I learned how to manage good sleep in bed. Some do well with an adjustable (hospital style) bed so they get comfortable and do not toss and turn. The best healing happens during REM (Rapid Eye Movement) and slow wave stages of sleep. This quality sleep is not often achieved during the day while taking a nap.

Too much pillow can reduce blood flow to the brain from the neck so a straight position is best.

I have gained my knowledge over decades of dealing with my own injury that happened in 1965. Lots of reading since 2000 when I suffered my last concussion. I've had a total of about 14 concussions, most were very mild. One was severe and three were moderate.