Charlie nodded in agreement as she followed her friend, her instincts on high alert. She couldn't figure out why, perhaps because of her mutation that wasn't as easy to conceal as Jen's. She looked up upon hearing Jen spot April, running after her. She just hoped they could get her before she got onto a train herself. 

"It's too quiet." She noticed as they descended the stairs into the underground world below. She didn't like it at all, her fight or flight response kicking into high gear.