[Oh Piter, you vastly overestimate the significance she placed on that kiss.]
Of course I need not. It is an offer freely made, and freely rejected if that is what you wish to do, without any inherent expectation. [She doesn't even expect basic kindness from him anymore, honestly, but it won't stop her from being who she is.]
Similarly, you need not concern yourself with my becoming irrevocably attached to you. [She's offering to cook breakfast, an act that requires little effort on her part and she presumes would be appreciated. But if not, she'll move along.]