Meghan,
There is a list of Dr’s familiar with Eagles that I will link below. Hopefully you can find one close enough to travel! As far as having symptoms with only calcified ligaments, it is possible since Eagles is defined as elongated styloid processes and/or calcified (or partially calcified) stylohyoid ligaments.
There is hope! Many members visit the site less after surgery as their symptoms resolve, so a lot of the people you’ll meet here are those who are still awaiting diagnosis or treatment. I had my second side surgery in January and am healing well. I was able to return to full activity 6 weeks after surgery, working remotely 4 weeks after. If you have any questions please let me know.
Looks like the only Montana doctor is in Billings. The link below shows all doctors in the US who are familiar with Eagles.
https://forum.livingwitheagle.org/t/us-doctors-familiar-with-es-current-list/4752?u=anharris