That's because she isn't always there. She only appears on Wonder Bridge when certain conditions are met, which is why I asked if anyone knew more about that. I didn't even know about the ghost girl on Wonder Bridge until someone brought it up on another thread. I spent weeks searching for her, but she didn't appear until recently. From what I've heard, she was killed during the construction of the bridge, which is why her ghost appears there sometimes.
Is her overworld sprite an ordinary sprite or is it different. Just trying to recall if i've noticed her before.