I just spent an hour talking to my wife, and it reminded me of the 1994 movie Oleanna. That is a David Mamet movie about a student who is struggling to pass a class, and she doesn't like her professor's attitude. So she stumbles upon a plan to ruin his life. Once she gets some outside support for her vindictiveness and gains the upper hand on him, she is scary.
The whole movie consists of dialogue between the two parties. The dialogue is completely stilted, artificial, and unconvincing, so I don't necessarily recommend it unless you are a Mamet fan. Here is a review.