Gonna toss my token in the "dad was the Other" pot here - he was aware of the role of his house, and, if he understood the nature of the betrayal after the fact, he would put the burden on his real daughter, who had the power to actually make a difference. This assumes the "guilt" he's feeling in this timeline is an after-effect of indirectly casting magic on another person.
All-in-all, he still comes off as an asshole because he never bothered to love his daughter prior to the arrival of the fake, hence the need for the "reset."