Frank lets her ramble, knowing from experience it's better to just let her go in these situations. Well, not this exact one, which is clearly unique unto itself. When she mentions puking, he lets go abruptly, watching in horrified fascination as she seems to blink in and out of her own body. They really need to get the hell out of this city.

He opens his mouth to say something - anything - when she takes off and it's all he can do not to throw something at her. He still might.

"Kam, wait! Where the hell are you going?!" He takes off after her, breathing harshly by the time they reach the water.