Sydney can tell you're frustrated to the point of being mad.
"Aww, you poor thing, is it that bad?"
You tell her it is that bad.
And then you start telling her just how much you want to be inside her pussy, plunging away, and you are so convincing in your description of how much you want her pussy, that you start convincing yourself.
This brings you ever closer to giving in to her charms, no matter how obvious her tactics.