It is not raining where the officer finds the body, but it is pouring rain where the detective is standing a short distance away.
The phone Sam is looking at when Jubilee takes it from her is larger than the one pulled from the toilet where Jubilee placed it.
Ambulances do not carry crutches, so Victor would have been on a stretcher for medical treatment after being attacked. He would not receive crutches until leaving the hospital.
When she is notified about the body, Det. Lopez is standing outside in a downpour with no hat or umbrella, but her hair does not get wet.
The fraternity boys would know Sam had nothing to do with Paul's death at the frat house, as she was not present when he would have ingested the pills. They were always well aware of when she entered the frat house.
Near the end in the fight scene, Jubilee knocks out Victor, having hit him in his arm and leg. He is seen immediately thereafter rubbing his head and then with a bandaged leg on crutches. He could not be knocked out by being hit in the arm and leg with a tree limb.
While arguing with his wife, Prof. Miller mentions that Sam wasn't in his class but was in his wife's class. In fact, both Sam and Kristina were in both classes as seen in an earlier part of the movie.