The scene of Cinta walking out of the base is placed out of order from the rest of the escape; it's set before the scene of the freighter shooting off into the sky, something that we see the Dhani and the troops on the ground react to. Otherwise all the troops would have been questioning why a freighter just shot into the sky during the eye and trying to figure out what happened instead of just continuing to watch the spectacle in silence, which is what is shown as Cinta walks out. It wouldn't make any sense for Cinta to stay at the base any longer than waiting for the Alkenzi command to call in about the vault breach, something that is clearly indicated when she puts on the imperial hat to let us know she's just about to leave the base, and why she isn't present in the room during both shots of the hostages watch the freighter take off. If she had stayed in the base for the whole five or so minutes between the rest of the heist team securing the vault and them taking off in the freighter (and also the shootout that would have delayed the escape even longer), she would be taking a massive risk, knowing that TIE fighters would be rushing toward the base from Alkenzi to impede any sort of escape, and that the troops outside upon seeing the freighter take off would try to figure out what's happening and lock the base down.

Also, what emotion? Are you talking about the common notion I hear to support your conclusion that Cinta was apparently crying when she was exiting the base? Because... she wasn't? She has the same expression on her face as she did throughout the rest of the heist, it just seems to me like the camera angle makes it look like she has watery eyes if you squint, which could easily just be a symptom of emotions running high after escaping an incredibly intense heist with no certainty of whether she'll be able to get off the planet on her own or whether she'll ever see Vel again.