And it just keeps getting weirder

Seems that Katie must keep silent when she gives birth to her and "Tom's" child. See here. I can assure you that Mrs. Isaac will be doing no such thing when she goes into labor some time in the next 5 weeks. And the painkillers will be readily available for the mother-to-be (and maybe even the father-to-be). The only silence may be from Isaac in the event he passes out.