She should look into medications that also treat mental health issues - such as PTSD, Depression, anxiety, etc... A lot of the medication that is use to treat those type of conditions, actually work even better on fibromyalgia.

Also, it has been studied and believed that conditions like fibromyalgia may be caused by or at least go hand in hand with certain mental health issues, no matter small/ minor they are. The mental health issue (which is caused mostly by chemical imbalance in the brain) could be what is causing the pain in the body as a way of manifesting itself, instead of in emotions. It's being manifested in pain. The person may not even release a condition is there. They feel fine mentally, but pain is either worsening or not improving. Being in the constant pain with no rhyme or reason could then in turn cause depression, anxiety etc, because they feel that nothing is working and there is no end in sight. When really they aren't getting the proper or sufficient treatment . Which just continues the cycle and increases the pain level.

I work with a lot of Combat veterans from different periods (Vietnam, Korea, Gulf War, etc)... It's something I see on a daily basis.

Just my humble opinion. Hopefully this can help your friend. If I over stepped, let me know and I will delete my post and apologize.