My favorite Rose moment has to be near the end of Act 6, when shes talking about the concept of Jasperosesprite^2 usurping her as Rose prime, it shows a level of insecurity about herself that we really don't get to see often, even if here its portrayed in a joking manner. She tends to be one of the most reassured characters in the comic, due to her classpect and personality, so it makes it really interesting when shes caught off guard like this, or maybe I just like seeing characters at their brinks.

(image unrelated, for the most part I dislike the bob cut, but in some panels it can look REALLY good)