I already feel that they have used the notion that Agatha (as the neighbor in wandavision) already looked after Wanda's kids periodically. so thats a wink at the old governess roleWell, the Fantastic Four movie is rumored to be a 1960s period piece. That makes her being Franklin's governess awkward. I mean, sure, time travel, but still awkward for anything that isn't really core to the plot.