I probably thoughts on this arc but I will say gerson encouraging Susie to direct her frustration towards trying to find another outcome is both very cool and does cause quite the gutpunch when Susie realises that Toriel was never in any danger, so their adventures in Ch4 didn’t make any real change

(For want of a better word) DPS of the party, forcing herself to be violent/aggressive because that’s the only thing she believes she can be. This is exacerbated by both ralsei‘s rhetoric of the prophecy being immutable and him (probably unintentionally) discouraging her from pursuing healing magic

I’m only up to the study on this playthrough but you can already see throughout the end of ch3 and the start of ch4 her frustration building at her perceived inability to do anything about undyne or the roaring knight, which in turn pushes her to fall back into her original role as