While Celeste is capable of some deep insights, she wasn't really all that clever. Normally this would make a ruse from her seem really obvious. But luckily things work very much to her advantage, as she's simply too stunned by Senna suddenly acting the role of damsel in distress. She freezes in shock, and by the time that wears off she's had enough time to figure out exactly what was going on. "O-of course! My kiss shall guide us on the proper path!" she says, risking being struck down by the god of acting for her melodramatic performance. She leans in to give said kiss, hoping their ruse works.