Why is it still so hard for mothers to speak up about postpartum depression?

In the late 19th century, American writer and new mother, Charlotte Perkins Gilman, spoke of her experience of severe postpartum depression in her now famous short story “The Yellow Wall-Paper.” “The Yellow Wall-Paper” goes on to depict the well-meaning but ultimately harmful and oppressive efforts by her physician husband to alleviate the illness by mandating…