That being said, I have no idea who this girl is, but she's going to steal my Dukedom away from me on Yelp.
The question is: why do you care?
The answer is: I don't know. Why should I care that this woman, who is probably nice, has more check-ins at a public transportation stop than me? I know that once I leave the area that I'll no longer be able to check-in and thus will lose the Dukedom anyway. Who knows? I don't and that's probably why I think competition is so funny. It really makes us do such funny things.
Whatever the case, she's probably cheating.