"my young daughter doesn't get any unaccompanied internet access" - you will discover that you are mistaken about this. Kids do not tell adults about the hole in the fence.
The reality is that we have a misogyny problem, not really a porn problem per se but one that's reflective of a society that could, for example, produce Trump.
Trying to solve this by blocking porn is basically misogyny trying to protect itself through distraction. Hey look over there, she has her tits out gasp, clutch pearls.