I had no idea at all it was this bad and I am the person who is meant to know her best.
You are there now when she needs you and you’ve done the right thing – hopefully the change in medication and other professional involvement will help her and avert an immediate crisis.
Please don’t feel guilty for not ‘spotting’ this, I’ve been there and you have to, in the end, accept that you have done all you can but you are not the reason for the crisis nor the person who can, ultimately, prevent a course of action. Just be there for her, let her find her own way out of where she is – try not to ‘solutionise’ the issue.
I realise this post isn’t wholly positive but you’re likely in for a long journey and your own mental health is as important as your wife’s now and you must understand it’s not something that you can solve just by loving her – she knows you love her – or doing things for her. Being there and accepting her as she is for now with hope for the future is as important.
You both have a chance now – you’ve helped her get to the point, today, where you can both look to a future. Not everyone gets that opportunity so you’ve done a good job, just keep on keeping on.