Moment maps of the simulated [C II] emission at a spatial scale similar to that observed for the Diamond Ring. From the hydrodynamic simulations including stellar wind and with an initial slab density of 350 cm⁻³ and thickness of 2.0 pc, shown in Fig. 8, we applied a 2σ intensity threshold based on our observed [C II] noise level and convolved the maps with a Gaussian kernel of size of 15″. The slab in this synthetic observation is rotated by 34° against the plane of the sky to match the observed tilt. The Diamond Ring is additionally rotated by 29.6° counter-clockwise (Fig. 6), which is not accounted for here as it does not change the observed LOS velocities.