Mimi,
Welcome to NeuroTalk. I am sorry to hear of your daughter's struggles. There are a few things she should get checked. She very likely has an upper cervical injury. C-1 and C-2 can be traumatized by the violent forces in a auto accident. The soft connecting tissue can become torn and stretched leaving her with muscle spasms and inflammation that can cause all sorts of concussion symptoms. It takes a specialist to identify the fine changes in cervical vertebra position.
Also, she may have developed a hormonal imbalance. Most doctors take a shotgun approach to hormones. To find a specialist in hormones, check with
https://www.womensinternational.com/..._referral.html
Also, read the blog at
http://braininjuryselfrehabilitation...mptoms-part-1/
She should also get started on a vitamins and supplements regimen. Read the sticky at the top about Vitamins and Supplements. Also, read the post regarding Omega Fish Oil posted yesterday
Please feel free to tell us anything about her symptoms. There are lots of good people here who can help.
My best to you and your daughter.