Perhaps helpful to see a more normal sized temporal styloid process. As you can imagine, a lot of vital structures around, but it might be a matter of cutting that bone and sliding it out. Pretty sure that is attached right near where the carotid artery enters the skull. It is very interesting, almost appears to be articulated, like a finger. I wonder how it is attached to the muscles in the neck. There is normally a ligament that connects it to the hyoid bone in the neck. It is sort of like a thin horseshoe shape, with the open part facing the back. Only bone that does not connect to or articulate with another bone. The long styloid process is pressing on things that don't want pressed on, like nerves and vascular structures, probably pulling on the hyoid bone too. When she turns her head, or looks up and down, it is moving those bones around, like a cocktail stirrer in a big glass, but there are two stirrers and the glass is your wife's neck.
You would be depressed too if you had endometriosis, that is some scheisse I am glad I am immune to as a dude. Good luck with the wife, she sounds pretty tough, or she would have already quit.