Help me reach my sister’s Graduation

Hi, I am Andres and come from Peru. I recently traveled to Germany to start with my studies on Ingeneering. I was talking with my little sister in skype and realised I will not be there for her school graduation. I thought of the idea of making her a little surprise and suddenly appear at her graduation night. The problem is, i am a student and don't have enough incomes to buy the plane tickets. This is why I am here, if there is a chance you guys can help do this for her it would be awsome no matter if it is a small or big contribution! I will still do my best to buy my tickets by my own but I serverly doubt it.