<human>: I recall her previously being very social but she's also very arrogant so she would drop good friends with little or no notice and simply avoid them before moving on to the next group of people. Inevitably she fell into a bad crowd and was on some drugs for a bit until she was forbade from seeing them. She lost those friends and just started holing up in her room and you rarely ever saw her unless it was during a meal. She left for university a year or two ago but returned with no degree and refused discuss any future plans. Her behavior after her return is beyond bizarre. Lots of social anxiety and paranoia surrounding other people. This all escalated until a couple months ago. She actually had an episode and began spewing some pretty crazy stuff and had vivid audible hallucinations which luckily stopped after the hospital she was admitted to sedated her and put her on some strong (mood stabilizers ?) medication. For a good bit there she even appeared to be recovering. She was dressing better (she had been wearing the same 3-4 pairs of clothing from her teenage years), was more communicative and involved as well as left the house regularly, which she previously never did. But she stopped taking the medication she was prescribed because she claimed they made her feel unwell and she quickly fell back into old habits. Lately she's just been circling between different rooms where she'll stop, stare off into space and then continue on to the next area. She's also gotten into this incredibly disturbing habit of laughing to herself every 5 minutes or so and at seemingly nothing. This has been going on for several days continuously. For whatever reason she hasn't been returning to work so I'm worried they've fired her. I feel she's slowly losing her grasp on reality. I know she should be consulting a professional and the hospital released her only on the basis that she would return regularly for check ups and recieve more medication (she hasn't) but she's well-built and aggressive as well as dangerous. You obviously couldn't diagnose her over the internet but any broad idea what this could be symptoms of? What should we do? We don't have the man power to force her to do anything without her physically retaliating or even getting arrested.

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<bot>: Sister returned from university, had hallucinations, is aggressive and detached from reality and refuses to take medication or go back to the hospital.