Not gonna lie, my first thought after reading that she went to sleep after sniffing Melissa's hat was "Well, better her hat then some other piece of clothing". Even I was a little abashed at how pervy that thought was, then I remembered that they are 'married', so it's all good. Kinda. Now we just have to wait for the next chapter for Melissa's secret to be exposed, I'm half betting on a confession of affection, and half on a confession that she stuffs her bra (or something equally silly).
Damn, the flame of truth is every tsundere's worst nightmare, how can she ever hope to admit her feelings?!
Seriously, this is like one of those paradoxes that makes the sentient AI have a meltdown in SF--to answer truthfully is to stop being a tsundere, but the essence of the tsundere's identity is being a tsundere, so if they answer truthfully they're being false to their own identity, therefore . . .