Nothing to do with this but... I've noticed almost every of such translated manga always seem to use in-laws rather than step or foster or whatever... I wonder why.
Why does she keep yapping about being push into the game's route? You know what the game you did, so don't do it, simple. Can't change how the story goes? Well, your supposedly dead father is quite alive and is standing right in front of you, miss that, did ya? Also, it doesn't seem like her actions are controlled or anything.