“The Left Lane is for passing or turning only” applies to any multiple-lane highway not just for Interstates.
In her short video, there is a truck to her right, and she also states she's going to be turning left.
That being said, if this whole thing occurred over several minutes, then she had plenty of time to get out of the way of the dipwad. However, she is in no way responsible for the outcome of the last actions of the dipwad.