You simply recieved the red flag from her. If your partner doesn't wish and want the best for you and your future then that ain't a good partner and your gf seems selfish and only thinks of herself and her problems.

Focus on your career and your future, trust me it's not worth it to turn your life upside down for one person, especially that you are doing great now and have the advantage of focusing on your study without any distractions.

You have a good brother really man.