How to make the girl I like talk to me again?

Data:
Days since we met : 94 (counted until this question is posted)
Time before I leave and study overseas : 1 year (counted until this question is posted)
Days before start of public exam : 32(counted until this question is posted)

Background information:
I met this girl in my computer class. She came to our school because she failed the public exam so she has to repeat the final year of college.
I didn't have much feeling about her in the beginning, but when I started to chat with her via Facebook and whatsapp, I found her very lovable and adorable.
Very soon, I started to forge a ring(with real diamond) that I want to give it to her as a token of love; also a knife, which is the thing I'm most skilled on making, that represents me when I'm not by her side as a self defense weapon; and a heart-shaped wooden key chain that has her name on it.
All those things are finished and ready to be gifted on planed dates, and she has no idea that I was spending at least 1 month to make those things.
According to my plan, I will vindicate to her on the day which the public exam result is released / graduation dinner(the probability for this is much less) . Altogether, the knife, the ring and the heart-shaped wooden key chain, will be given to her on that day.

I was supposed to be on low profile about this since I don't want to disturb her studies but may be someone have told her about me.

Current situation:
Now, for some reasons that I don't know, she knows I like her and is trying to avoid me all the time. She even asked me to stop annoying her when I sent a "happy new year and hope you get good grades" message to her...

What should I say to her / how to make her talk to me again?