I don't get it. If she called you too it was because your results were good, no? Who cheats to get a bad result?
How the heck is that even possible? :o
Because what the cheater is trying to accomplish is to avoid having to think.
It's an act motivated by either laziness, apathy or rebellion (or some combination thereof). Not motivated by trying to get a good grade.
In Germany, the traditional sharp-tongued answer of pupils to the question "How could both of you get the exact same WRONG answer (in the test)?" is: "Well, we both have the same teacher." :-)