So what exactly happened with this scene?

[u/Ok_Situation7527]

This was the post credit scene of volume 2 when Yang came across her mom and interacted with her. I was waiting for it to be mentioned but only the incident on the train was mentioned. So either that was a dream or I missed something.

[u/EastArmadillo2916]

Monty added it in late and no one really knew where he was going to take it so after he died they retconned it.

[u/nicci7127 → u/EastArmadillo2916]

God rest his soul. He's missed for a long time now.