That was...the most anti-climatic thing ever. Can you PLEASE stay there and morn for her or ANYTHING else besides just casually walking away. This felt super rushed and weird
It felt weird, but it's understandable. It's very clearly shock. There's also clues that she just... vanished. Her clothes are just on the tracks and people are wondering where her body went. There's no blood, either. It's a very strange situation, and just showing what happened would've taken some time. It can't be one shocking panel, because she's... gone.
I think the author had a choice to make on the pages, and wanted to focus on the loss and shock rather than explain the event. I don't know if it was the best choice, and reading it now sure feels... strange, but I suppose it depends on how the story progresses and how all the pages fit together overall.