New Suggestion at 18/9:
Nice release of Nurse Room
1. Make some partition of each bed in Nurse Room to separate them.
2. Similar to the first point above, each room as a locker, let the tentacle do "somethings" inside.
3. In hallway, I know the gas locker is already exists, make somethings similar, redirect the girls to another rooms, or just replace the brainwash to redirect with the gas locker.