>>2819754>>2819795I would go down the individual character story in a bigger world direction. The setting is fairly basic with ample room to insert Kat and others involved into something more than they can chew. I wouldn't make this about the bigger politics, that feels like something that's happening in the background and the main characters have their own lives to worry about.
I would explore Kat's relationship with her dad, how she got to where she is now. Did her dad find out about her thieving and leave her be, or did something else happen between them (and maybe her mother?) to separate them and seeing no better path turned to life of crime.
What about her childhood? Was she born on the station and knows nothing about planet-side life or does she yearn to return to earth or other planet? If she lived there her whole life she probably has some friends, frenemies and would be familiar with many folk. Or perhaps because of her father she wasn't allowed to interact with "filthy commoners", maybe her dad's a prick with no respect for her and she just wants him to respect her.
This is just the generic stuff off the top of my head. You've got some dots, but need to connect them, then decide which are worth expanding and which to just leave as background decoration.