Hakuoro's not a pedo, apparently. Never thought of her as anything but a cute daughter/princess. She's also not really into sex since she's young. They entertain her getting petted rather firmly by him sometimes, but she runs off after a couple minutes of that usually.
I keep getting logged out. Like I said, he does Eruru first. post #48582
As to why she isn't actually impregnated--no insight. It's a big thing for most of the women to actually have his child, but none of them actually achieve it. Urut comes closest by mothering the foster child for most of the game.