if she is really desperate to get off them, she can wean herself off of them, but she definately needs to wean off of them.... it can take a good 3-6 weeks too.... you'd need a pill cutter as well unless there's like 4 sections to the pill (which i only know one pill like that, xanax) you very gradually lower the dosage a week at a time, like the first week take 3/4 of a pill, then 1/2 the next, finally 1/4 the third... or if it's a larger dosage pill (say 200-300 mg doses) you'd need to reduce about a 1/5 or 1/6 at a time....

there are risks, your sister would need to be absolutely positive she doesn't need the medication (which means that her suicidal incident would have been caused entirely by quitting the anti-depressant, which isn't unheard of but somehow i doubt it) also i'm only telling you this because i do know what i'm talking about, i've been on countless and countless meds and went to diffrent ones probably over a hundred times (not all of those would have been purely anti-depressants or anti-depressants in general, unfortunately for me, meds don't really work for me, so i just keep getting switched and switched.) doesn't sound like the doctor is going to let her go off of them... either way, i'm not entirely suggesting this, as like i said it's not unheard of to go suicidal upon just quitting a med, but i doubt somehow that's what caused it.... i'm just telling you so that if she is going to continue to stop her meds, atleast she has the info to do it correctly...

eitherway good luck.