I was a bit put off by Harriet's reaction to a corpse in the film of the Lord Peter Wimsey book Have his Carcasse, thinking she was being shown as something of a weak woman. Then, I read how this scene in the book comments on how people in detective stories always treat discovered corpses nonchalantly, whereas a real person would act like Harriet. Now, I notice how omnipresent that unreality is in most mysteries — Jordan
Plus, she'd just been falsely accused of murder and barely escaped with her life. She'd gone to the seaside specifically to forget all about that chapter of her life. You can understand her being kind of freaked out to stumble across a corpse.