How can we call someone to slovenia ?

Hello guys. My name is Utkarsh and I belong to India. I am planning to go to Slovenia for a course in civil engineering. I have completed my graduation in civil engineering from a good college in India. I am planning to go for January intake 2018.
My concern is that I want to know about the ways to get my girlfriend to Slovenia as once I reach there, I wont be able to come back to India for 3 years. Also, we wish to get married soon as both of us are 25. Please tell me the best possible ways to get her to Slovenia and secure a good future. She is an electronics engineer.
Kindly help me here guys as her parents wont wait for me to come back and are forcing her to get married to someone who is already settled in India.
Your efforts shall be appreciated.
Thanks.

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