Still want to study here?

A Tongji representative wrote me an email telling me that she had found out I wanted to study at their university this spring semester. She wanted to know if I still intend to do it. In this case I should mail them the attached forms. There were no forms, and I already applied in December. The documents which I hope contain the admission haven’t arrived yet. How long can it take a letter to get from Munich to Freising?