It's a little odd that's not it's own quest step. I'd say it's a little odd that it's not as most of the time bank steps are quest steps.First a scene in the lobby has to be triggered where the bitchy sister asks for a pool. Then you make said pool and when they're together there they will have an argument. You ask the shy one if shes ok etc. (no choices, this happens always) and after that you can talk to her anywhere.
I like this update, but part of me wonders if we shouldn't have maybe pushed back a few of the sister events to get to the DGN a bit quicker. I mean yes, I like the steps done in the story telling with the spirits and the possible double agent (or possible red herring double agent), but it sorta feels like every quest other than the DGN and new hotel running quests were chapter 2 and elements like Leah's punishment should've been part of chapter 1. But overall, pretty great and man it came out fast, so lord only knows if you ever come to an unavoidable fork (saves break), it'll probably feel more natural when I can keep on with the DGN path to it's hopefully great conclusion.
Though based on the kitty bell necklace in the character portrait for older sister, I can see who might be one of the first people in DGN maybe possibly.