Nathan came into the palace, not into the chamber, where he might not enter unannounced. Bath-sheba retired before Nathan entered, in accordance with Oriental ideas of propriety. So, when Bath-sheba was again sent for 1 Kings 1:28, Nathan retired (compare 1 Kings 1:32).
Related Commentaries of 1 Kings 1:22
1 Kings 1:22
22 And, lo, while she yet talked with the king, Nathan the prophet also came in.