At Howl's suggestion, she became more enthusiastic.  A chance to explore this new wonderland?  It sounds like a lot of fun!  And plus, Isabelle is tempted to try to draw her adventures in this land at some point.

"Yeah!  Let's go!"  Isabelle said, hopping on her feet a bit.  She looked around for a bit for the exit.  Well, the little girl and cat can't go anywhere if they don't leave the room, can they?