All the window incident proved to her was that she needed a better plan to smoke Superman out. Which is why Donner Cut Lois is immensely more awesome than the gullible, unperceptive Lois of the Lester version.
Actually, all it proves is that we're watching a comic-book movie teetering on the edge of being populated entirely by one-dimensional caricatures.
The filmmakers were taking their cues from decades of one of the most immature, dysfunctional supposed "romances" in popular fiction - Superman and Lois Lane in the comic books.
If nothing else, Donner seems to have finally, permanently
introduced the idea of some real mutual affection into the Lois-and-Clark relationship.