It takes a lot of courage for a girl to study abroad by herself. It is not convenient in all aspects to be in a foreign country. Your presence can be regarded as a comfort to her. Here are some suggestions for gifts:
1. Bring some specialties from home. She can't eat her favorite food abroad, so bringing some specialties will definitely make her very happy.
2. Give her a creative gift, a color-changing water cup with your photos, so that she can see your appearance every day even if you are thousands of miles apart. Give her a couple item, a silver couple ring, engraved with your names, so that she will miss each other even if you are not around.
3. A surprise romance, a sudden appearance without notifying her, a bouquet of big roses, I think it is enough for her to scream, and being touched is a simple thing. These are my suggestions, I hope you like it.