So, psychiatrists do not admit for involuntary hold someone for not going to classes. They do that when someone has indicated they are a danger to themselves or others. Suicide threats, for example. I'm guessing your sister has not shared what has fully been going on and that her presentation was such that she warranted that hold. Please be open to that for her own benefit.
Paxil like all drugs in that class is not a 2 week medication. It's a long term medication and does not reach therapeutic benefit until 6 to 8 weeks. There ARE start up side effects called transient side effects. They subside. There are other longer term side effects though although, as a class, the SSRI's are fairly well tolerated. She's been on it briefly, but in general, the rule of thumb is to titrate up slowly (increase the dose over time slowly) and to titrate slowly back down.
Your sister is in crisis. I'm afraid the family is not recognizing that. I'm afraid for your sister if she does not receive strong psychiatric intervention. good luck
Paxil is the hardest drug out there to stop taking, but before I start here, being on it for just two weeks would not usually result in a withdrawal -- she hasn't even been taking it long enough for it to start working yet. But assuming it is withdrawal, and it might be, people react very differently to drugs, the only way to deal with this is to go back on the Paxil at the last dose at which she felt fine and to taper off more slowly. You can hope this will pass, and given she was only on it for two weeks, it really should pass, but if you don't think it's going to go away and become a protracted withdrawal, then going back on it and tapering off more slowly is the only known way to deal with it. Those are your two choices: hope it stops or go back on it and taper off slowly. No third choice. Now, as to the underlying issue, don't overestimate first world countries. We're just as clueless as everyone when it comes to these meds. Nobody ever told me about the dangers of stopping Paxil when they put me on it and didn't tell me it was destroying my life with withdrawal when I stopped it. This is done because drug companies control the information flow and most doctors are horrible at their jobs the world over. Just as most people aren't that great at what they do for a living. It is what it is. The other underlying problem is the hospitalization. Why was she hospitalized? Why did they choose that particular medication? What was the diagnosis? A psychiatrist saw here at that hospital no matter the country, so some diagnosis was made. What was it? What behaviors is she manifesting? This is important, because Paxil won't treat psychosis. It treats depression and anxiety. It's actually a pretty effective drug when it's absorbed well, but the stopping problem is severe. Most psychiatrists don't start with that drug, given there are others out there. But you do have to know what's going on with her in order to know if her treatment makes sense. Kudos to you for caring -- nobody in my family has done a thing for me -- and all the best in this, but if your sister is suffering from mental illness, something does have to be done, whether it's therapy or lifestyle changes or medication. All medications have side effects, not just Paxil, it's just worse for many people.