A Disqualifier is more to be used along the lines of when she sees you as a "threat" per se.
Quote:
According to the Mystery Method, disqualification is a way of “coming in under the radar” so to speak. A disqualification is any statement that the PUA can make that shows that he is not hitting on the target. By disqualifying himself as a potential suitor, a PUA is able to get past the defensive shields that women often have, and gives him the chance to work his game.
From this quote here, you can see that you may not be using the DQ in the right place... It's more of a method designed to get her to lower her defense so that you are able to run your game.
Hope this helps.