Hi

Sorry that you feel so alone and overwhelmed....it is so clear how much you love and care about your wife. I am sorry that she is going through what she is and that you are as well.
In reading your post and some of your others it is apparent that you are dealing with your own depression. I think that at this point in time that it is sooo very important that you take care of yourself and show your wife that you are determined to live and fight to get through the depression. I just read in some of my research that when somebody lives with somebody else who is depressed they are more apt to be depressed themselves. So you really Do NOT have much control over your wife's depression but you DO somewhat have more control over overcoming yours.
I think the best thing to do is to show your wife the way by finding the meds, getting good sleep, eating right, exercising....becoming proactive in getting yourself better.
Your wife is in a place where she is being monitored more than you possibly could do. But the one thing you CAN do is take care of yourself making sure that you are getting better too so that when she gets home you are able to support her.
Call her and let her know that you love her and that you are taking good care of yourself and that you want her to do the same. That is the best you can do until they stabilize her and find the right med to make her less suicidal.
Come her and talk if it helps....sometimes people don't know the right thing to say.....you are obviously a very caring husband and your wife needs to want to live for herself. I pray that the doctors and therapists allow her to get to that point.
Take care of yourself and know that there are lots of us here who do care......Goody