Well, i agree with others, what the daughter say here is really shitty.
Of course, for her, her mom will always be her mom, no matter who the father is.
But for the dad ? His wife will always be his wife. That's why even 10 years later, he didn't even tried or wanted to be in a relationship with someone else, and he would die like that probably (and pretty soon too because of depression+bad health) without this miracle.