"nerd dream-girl" whatever you mean by that has little to do with it. She's a woman on the Internet so she is sexually harassed. She's a woman in the world so she is sexually harassed on the street.
And even though the parent comment attempted to steer the discussion away from sexualizing her by directly quoting her desire to do so, you brought it back with a pointless comment about some ill-defined nerd-girl fantasy.