Clarisse knew the moment she was told to go on the quest that you would be one of the only ones to volunteer to go with her. Sure, she refused to let Percy take the quest, it’s all she’s ever wanted, but she would let you come along if you even looked at her. It was expected when you helped her fight.

You understood her. She was horrified to be a failure in her dads eyes, and when she secretly saw you praying to your God parent for them to not see you as a failure, she knew you were similar.