(edit:wanted to change my wording to be less accusatory)

Obviously I don't have your entire story, and I'm prepared for you to immediately jump down my throat again for "defending psychatrists" for this. But you do know there's also a chance that they just... didn't have any more capacity at the ward at that time to provide the kind of care your SO needed right? Which is horrible, and I'm very sorry that the both of you went through that. But not everything is about psychiatrists wanting to push pills. There's a very real chance that their capacity to care for in-patient suicide risks was maxed out and that really was all they could handle at that time. Would you rather they have taken her into the ward and not had proper supervision on her and something happened to her in there because they took in too many patients?

The healthcare system is deeply flawed, it sucks, there are bad actors all over it. But that doesn't mean that everyone who shares a specialty with those bad actors is themselves also a bad actor. You might want to find someone to talk to about that experience, because it seems to have really deeply affected you.