Hi there! Sorry to hear that you're having trouble! We'd like to take a look at this, could you send us your save file (autosave.sav) to leef6010@gmail.com? It's located in %APPDATA%\Godot\app_userdata\Lacie Engine\save.
Alternatively, you can try to pick up the curtains from the chalkboard in the same room. Thanks! :)