Is your lease up soon for your apartment?
If so, arrange a new apartment to be ready for your when lease expires.
Have it furnished and prepared. Electricity, cable, internet, etc.
When your lease expires on the old apartment, then simply move over to your new apt, minus the g/f.
Don't worry about your g/f. First of all, she cheated on you while in Cuba. Secondly, she's an independent, capable woman who can take care of herself. Women don't need men, so make her earn her own way in life.