Upgrading to Save Time - S3.E8

Christina and Peter have a 1-year-old son. After extended maternity leave, Christina is returning to work and leaving the baby with Peter's mother on the other side of town. Now Christina wants to sell and upgrade to a bigger house near the mother-in-law to cut down on travel time. Can they close the deal before she returns to work and before Christina's agent sister, eight months pregnant, delivers her own baby?