Hello hon.
I can't imagine how awful this must be for you, and the first few weeks, maybe months, are going to be the hardest, but it'll get better.
The not knowing is the worst part, but perhaps once she's had her space, she'll be more open to be approached about why this happened and you can have some understanding and closure.
I'm so overwhelmingly glad you're still here on this Friday morning. I don't know what time it is where you are, but this is going to be your day. I will wander through it with you, look at things and see all the little details you've missed in the world, if it's raining, let it wash away your sadness for a few hours, if it's sunny, let it illuminate all the colours of the world, all the corners of the darkness in your mind.
I'm guessing if you'd been with your wife for so long, she's a great friend of yours. If you did anything 'drastic', you'd never be able to remember all those beautiful memories, or talk to her again. It may seem like a way out right now, but it's so much more beneficial for you to battle through the days.
You have some wonderful people on here who care, and I am one of them.
Happy Friday sweetie.
Keep your chin up. You deserve to be happy, and we'll get there together.