Yes, if you keep pushing the fact of ways to be together you will completely push her away. It sounds like she has possibly lost interest in the relationship. And the grades are just a lame excuse. I would back off completely, and let her make the phone calls and instigate contact. After only 3-4 weeks, you don't need to be dealing with this...I would back off completely and let her make contact if she wants too, if she doesn't within a couple days then forget about her..It's not worth the time an energy to you after only knowing this person for a couple of weeks.

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If you can't handle the thorns, don't crave the rose!!