I don't want to come off as mean. But to be brutally honest, one way you COULD lose what you have with her is to NOT be open.

I would strongly advise that you at least allow her to chose if she wants to talk about these feelings with you or not.

Yes, things will straighten out when you can get past the depression. But there IS the now to think about. I wish life could just go on hold while we fix our problems but it doesn't. So right now in this moment you need to figure out a way to interact within your marriage in regards to depression.

This is simply my OPINION. I know it came off strong, but regardless of what you choose to do best of luck to both you and your wife.