To add to what everyone else is saying, stop freaking out. The same curve which frustrates people to no end because their "amazing academic performance" is somehow arbitarily slotted into some B range also prevents everyone accept the biggest screw ups from failing out. If you have been to class, done all the readings, briefed every case, done an outline, then you are fine. You are probably in the top half of the class in terms of preparedness, at the very least you are right there with everyone else.
If you really want to study some more, my advice is to take some practice exams, get used to the multiple choice. As for her common law vs. MPC detail, go look at her essays. I bet one or two will be either asking how a common law case will come out under the MPC, or to explain how a case would come out under both.