i know people who similar situation as you. Girlfriend LDR for studies, they worked it out, now married and have kids already.
its tough but its a question on whether you want to commit or not. can you see yourself with her in the long term? its for you to reflect and decide.
but granted LDRs are no easy roadd. you need to be okay with the fact that is how it is. if you choose not to continue.. that's quite a fair choice too..
My girlfriend is going to study overseas., And I am so jealous :(