Siri won't update nicknames correctly

So, this may be kind of silly.

But I've previously used siri with my 4s to call me "master."
Recently bought a 5 and I activate Siri and tell it "From now on, call me Master."
It responds with, "okay from now on I will call you master." And then it brings up a contact card, but its not my contact info, its my girlfriends contact and underneath her name is the nickname "Master."

Another perhaps useful bit of info, I noticed my girlfriend is at the top of the favorites list, does that affect it?

Siri is updating my gf to Master. NOT ME!

Has my siri betrayed me?? Is she a selfish lying cheating ****??

Yeah.

So what do I do so this is done correctly lol.