Hi Saradane,
This was a mistake on my part, we argued for about an hour after I tried to resolve things. What is my best option to get her back? We've never gone more than 5 days without talking, so how can I get her back to the way it was before?
I don't think you can go back and I don't think you should go back. What you had in the past did not work and also seems not to recover by itself. To move forward you need to imaging what another future would be... .
Power is often about boundaries and right now she is controlling communication. That sucks and is difficult to counter directly. It is worth however to keep in mind that when boundaries come into play there is usually a need behind it, something that requires protection. Her vulnerable self, her new life or whatever.
Validation is a key connecting skill in friendship, romantic relationships or even commercial ones. Healthy romantic communication has an exchange of > 5 validating to invalidating parts.
At this point rebuilding the connection may be the more immediate step. Restarting intimacy then is another kettle of fish coming later.