Talk to her about it, Think of your future together... While your plans is with "going". You don't want to ruin it for your self and also for her by not taking the chance. I'm sure she wants all the good for you. But tell her openly that it scares you to leave her. it might hurt to leave her here but you have to go. be wise. you can still love her and build up your academics, It decides your future, so keep both things, keep in touch with her while you take your chance to learn abroad. andddd "taking her" isn't an option, she has her own dreams too, you don't get to drag her around just coz you want her around. just spend the next 5 years building up yourselves in your own ways till you guys can once again get back to Being together In-Person. till then, There's text, Video chat... keep in touch and focus on you Education.