Chapter 126 is just a side story - it's why it is called "A Vignette II". Chapter 57.5 was the first side story called "A Vignette I".
Chapter 126 is just badly labeled (should've been 125.5 instead) and it is set in the future when Yvonne and Elsa have already reconciled (which is probably gonna happen in chapter 127/128).
Chapter 126 is just a side story - it's why it is called "A Vignette II". Chapter 57.5 was the first side story called "A Vignette I".
Chapter 126 is just badly labeled (should've been 125.5 instead) and it is set in the future when Yvonne and Elsa have already reconciled (which is probably gonna happen in chapter 127/128).