Trigeminal Neuralgia, Sjogrens Disease or something else?

I am desperately seeking information to help my wife of 24 years. She was an active mother of four kids and a high school teacher 14 years ago. However, she began having extreme facial pain in 1999, and was initially diagnosed with Trigeminal Neuralgia and Facial Migraines. She was prescribed medication to help control this issue, but her symptoms soon began to affect other areas of her body and she could not seem to find relief through the meds. She was later diagnosed with Fibromyalgia, and a new prescription regimen began. Since that time, she has exhibited various symptoms which would suggest auto immune disorder, however, she has never had any prolonged relief from the MANY CHANGING SYMPTOMS. She now has no motivation to do anything outside of the house. She very rarely has the energy to do any of the typical household activities such as cook, clean, laundry etc. She does not sleep well most of the time; she runs low grade fevers; she takes pain meds daily. Recently, her eye doctor told her she has Sjrogens Disease. She has been to so many different doctors that I cannot even begin to guess the number, and we have spent thousands of dollars from our life savings over the last 12 years chasing a proper diagnoses and cure or treatment for her to have a decent life with our family. She is giving up, but I am passionately seeking an answer to this nightmare. I am hoping that someone out there may have some idea of who we can turn to for help.