I wonder if including an unmarried pregnant character in MATTRESS in 1959 would have been considered shocking or edgy?
As you say, this unplanned pregnancy really drives the plot, although I wonder if the fairy tale setting would have dulled the shock for the original audiences. Or maybe Lady Larkin's focus on rectifying her "mistake" by helping the other characters figure out a way to circumvent the law so she can land her man made up for it.