Little did Erika know, her dad was already re-married in this new reality. Her newest wish ensured that he would either choose to get married or have to get married sometime in the future.
But how was her wish granted? Would it force her dad to have two wives at the same time? Or create a situation where he divorces his "new" current wife for some reason. Or worse yet, would the stone create a situation where she gets killed?
There were so many different ways that her wish could have been granted. In this case, though, the outcome of the wish was ...