Inappropriate Themes in ‘Ratatouille’ and ‘Nancy Drew?’

Two movies for kids coming out this month devote a significant amount of story-telling time to plot twists involving secret out-of-wedlock children whose fathers were never told that they existed. One is the PG “Nancy Drew” and the other is the G-rated “Ratatouille.” Is there anyone who thinks that this is an appropriate storyline for movies marketed for children? Is there anyone out there who looks forward to questions from a six-year-old about what a DNA test is for or how a father could be surprised to find out that he has a grown-up child or why a mother would want to keep such a secret?
It is not as though either of these is a sensitive treatment of a subject that may be of interest or concern to children living in a world of blended families and reproductive technology. In both cases, they are tossed into the plot more for convenience than for the expression of art or creativity. If the film-makers could not show some effort in designing a plot with more imagination, they could have taken the time to think about finding a plot with more resonance for children.