Karen might not have legs as long as Anthony's, though she was fairly tall, but she did know how to use them and she was certainly a lot thinner with less weight to move around so she kept up with him easily.  "Underground it is," she whispered.  She kept watch while he crawled in and when he had disappeared she crawled in too, only backwards so she could keep her watch.  Karen was a very practical and suspicious girl.  When the darkness had swallowed her she turned around to find Anthony.