Carolina and Oliver returned to the Heavenly Palace quite quickly, they had practically run their way back and even though Oliver was carrying the unconscious body of the man who attacked them, he was not at all slower than Carolina.
When they arrived, the doors of the Heavenly Palace had not yet opened for business and Andrew happened to be discussing some business with Victor and Helena in the recession, so they saw them when they entered.
Victor and Helena were surprised to see Oliver carrying someone, but Andrew was different, he focused his gaze on Carolina. Although the girl seemed more composed she couldn't fool Andrew.