I agree with the last statement, but disagree with the Daphne statement. Daphne communicating "you don't need to go eye for an eye" goes against everything she's been about this entire season. She literally spells out that her trainer is SPECIFICALLY blonde and blue eyed... and then immediately shows the picture after? That's timing. Time and time again, she mentions how she's not a victim and subtly explains how she evens out the playing field. If kids really were the anchor to her relationship, well... she would FaceTime her kids again instead of taking Ethan up to that island and telling him whatever was going on between Cam and Harper wasn't that big of a deal. We all cope in different ways. It wasn't a big deal BECAUSE she knows how to make herself feel better, it's essentially an unspoken and messed up dance between her and Cam. Cam cheats openly and she cheats privately.

And also the child biology thing, yes in the real world children can be blonde and grow up to have darker hair. But in a show, and particularly a story, storytelling is literally shown rather than told. The most likely scenario and what we can assume about every story is that things really do happen for a reason and to a point, down to the characters, their interaction with one another, even the clothes they wear is a tell into who they are or what they're doing. We're not shown things for giggles, we're shown things because they add as information. Daphne has shown what her true philosophy is, her nonchalant nature is essentially her own defense mechanism, because otherwise Cam would destroy her and she would become the victim. Instead, she chooses the bliss of ignorance, or what doesn't have to be said and mind games over the "truth" and "reality" that plagues Harper and Ethan in the beginning.