A postpartum nurse has received an exchange report on the four following mother-baby couplets.Based on the provided information, which couplet should the nurse first assess?

A 16-year-old G1 P0 who will be discharged in the afternoon.It was reported that she refers to her baby boy as "it" and that she requested to have her baby stay in the nursery so she could sleep.

A 32-year-old G5P4 woman who delivered a 4500 gram baby boy 2 hours ago after a 20 hour labor that was augmented.It was reported that her fundus is 2 cm above umbilicus with moderate lochia.

A 25-year-old G2P1 woman who is 36 hours postbirth and is having difficulty breastfeeding her baby girl.Her fundus is firm at the umbilicus, and lochia is moderate to scant.

A 28-year-old G2P1 woman who delivered a 3800 gram baby girl by elective cesarean birth.She had spinal anesthesia and was given intrathecal preservative-free morphine for postoperative pain management.Her vital signs are B/P 115/75, P 80, R 18, T 98.