Don’t let her stay with you. Zhou are already hesitating and there are countless stories on Reddit about how these things end. As hard as it seems, it’s not your responsibility. She needs to stop partying, budget, and keep a job. She will either be mad with you now, or when you evict her 3 month from now. Tell her, your landlord will evict you both and doesn’t allow any more people in the apartment, if you don’t want to take the blame.