The following is a dialogue between Alex and Haley appearing in episode 11 of Morden Family season 6.
Haley: I just wish there was something that you could teach me.
Haley: Wait, what about your Judo stuff?
Alex: Uh you're not interested in that.
Haley: No! No! I am! Come on! Karate-chop me or something!
My question is whether the Haley's "No! No! I am!" response is grammatically correct or not.
I'm not a native English speaker and according to what I have learned so far, I think she should have said "Yes" to express that she is interested.