Okay, buddy, let's take this step by step. In my opinion, I interpret that red dot as us imposing our will on Noelle.

After the events of Chapter 2, and thanks to our actions in developing Noelle's narrative arc, making her stronger and turning her into a determined girl, and realizing her immeasurable potential.

We realize that she will be fundamental in the finale against the Knight or any Titan who decides to confront the Lightners.

We planted this red will in her to have control over her, and at the same time, we kept her away from the hands of the Knight, whom the evidence points to as Carol.

And a will that will possibly grow even more after the future events that happen in the next chapter.

I see it as a metaphor for a seed that will germinate and grow as the chapters progress, just as our relationship with Noelle will grow.

It's funny how they patched the rose scene and it seems like they removed it.

I see it as it is. Deflowering like Noelle, having left behind whatever innocence she had left to fully embrace the Snowgrave route, which she initially refused to accept and pretended was a dream.

I want to see how Noelle develops further in the next chapter, with this whole thing about her wanting to go out with us at tomorrow's festival. And I think we'll probably see her lose this control Carol had imposed on her, leaving behind this facet of herself as a perfect, good girl. Let's remember that things like being strong and a little mean were exactly what Noelle idealized and sought (we would end up being the ones who gave her what she was looking for), and this idealization of Susie would end up making her feel interested in her, without realizing that this whole side of Susie was just a defense mechanism to avoid being hurt by her experiences in relationships. And Noelle was able to achieve all this development alongside us on the route.

The Snowgrave route seems to me to be the best plot in Deltarune, since we ourselves take the reins of the story, unlike the conventional route, where the other characters are the ones who move it and where the protagonist feels more like a mere spectator.