Hiii, thanks for reporting this here! We'll investigate on our end too.
The NPCs may sometimes need a verbal nudge to move; you can try asking the catgirl to join you in specific rooms in the apartment (e.g. kitchen, bedroom). Please give that a shot and let us know how it goes!
If she's being stubborn, please email support@alterstaff.io—ideally, with a recording showing the issue on your end—so we can look into it together. 💖🔪