I love myofascial release. It has been a godsend for me. It doesn't get rid of the pain on its own, but it definitely works great when coupled with my pain meds. For me, it's like taking a high dose of muscle relaxants without all the awful side effects. I have had a lot of different people try it on me & found a couple of practitioners who I actually have found helpful. One is an osteopath -- he is really great- very low tech, but a feel great the next day and for a week or so afterwards. The other is a napropath -- I really like her, plus she does a few other things like traction & some kind of machine that moves your muscles back & forth super fast (that's really great when my arms or legs are tense). It runs about the same price as acupuncture & if you have a dr who is creative enough to find the right billing code (usually billed as "physical therapy - light modalities", but sometimes goes as something else, often they can get insurance to cover it.
As far as acupuncture, I really love it for some things. I've found it hugely helpful for nausea & vertigo & insomnia plus it has helped me some with withdrawal symptoms whenever I'm taking a "vacation" from my narcotic meds. The quick pain of the tiny needle (yes, they put one in your scalp & some on your ears sometimes, but they only go in a fraction of a centimeter) is soon forgotten when you get complete resolution of your symptoms within a couple of visits. However, I too have not found it helpful to me for pain. I know a lot of people swear by it; I guess it just depends a lot on each individual & their body. Anyways, whatever works -- especially if someone is lucky enough to find a treatment that doesn't have so many side effects, risks or complications -- should be celebrated.
I really would encourage you to check into some of the alternative treatments for your daughter. I was so nervous about trying anything not considered "traditional western medicine" that I just kept taking more & more prescription meds. It got so crazy that I finally told my PM that we needed to try something else & that I would only accept suggestions of his that didn't involve medication or surgery. I was really amazed when he suggested acupuncture -- followed by several other alternative suggestions after the accupunture got rid of my nausea. There are a lot of scams out there, but I think that more & more doctors (especially the younger ones) are starting to become more familiar with alternative treatments & can offer suggestions about which ones are legitimate & have a real chance of helping your daughter. Medication certainly has it's place, but sometimes it works even better when coupled with other therapies - PT, mind-body medicine (like biofeedback), acupuncture, myofascial release, craniosacral therapy, massage, etc.
Myofascial pain can get worse over time, but we can also become less tolerant of it & our muscles can start to tense more or sooner than previously. Strengthening exercises , light workouts, plenty of rest & making sure to keep on top of the pain when it first starts can certainly help. Of course, all of those things should be supervised by a physician. The other thing that my PM always reminds me of is that myofascial pain (as with most pain) is cyclical by nature & that just because during this cycle it is lasting longer, doesn't mean that my resting period won't also be longer or that my next pain cycle will be even worse. We just have to take things a day at a time. I know that's super hard to do, but there really isn't any other choice unless you want your life to be consumed by worry & unhappiness. There is a lot of research that shows that positive expectations can speed recovery time. Yes, there's a place for realism & I need to continually advocate for that with my doctors in order to make sure I can appropriately manage my workload & absences rather than just naively hoping for the best & leaving my co-workers unprepared, but it really does need to be limited to those few areas.
I really do wish you the best. I can see some of how it affects my parents & can only imagine what you must be going through right now. It sounds like your daughter has a great advocate in you; she is really lucky to have someone looking out for her. Keep with it & keep encouraging her that things will somehow work out -- they will.