The thing that concerns me is that she has hallucinations since she was younger. I, personally, don't think that this kind of hallucination will just disappear in time without help (psychiatrist and meds). Suicidal ideation can come and go to, I am afraid that her feeling (depression) was in a different state/level when she talked to the psychologist and when she talked with you, so her opinion about that could be different as well. I'd seek for a second opinion from the pro here. Hope things get better for your daughter