Lucas was the last to leave; actually, he didn't want to go soon; he wanted to spend more time with Catherine. He tried to kiss her at the time of sunrise, but Catherine avoided him.
And now also she was reluctant to leave early, saying she is tired and wants to go home to take rest.
Lucas was highly disappointed, but he didn’t say anything to her. He thought that she might be on her period, that's why she is behaving like this.
By the time James and Alexa touched the city, it was already traffic hours and they got stuck in traffic, it was a big torcher for Alexa...