I guess that's it; it's confirmed that it was hacked. I understand the feeling, mate. 11 BTC is a significant amount, especially considering the current price. Unfortunately, there's nothing you can do since Bitcoin transactions are irreversible. You just have to learn from the mistake and move on.

I hope you won't blame your wife or anyone if it was lost due to an unintentional mistake. It's not the end of the world. As long as we are alive and in the crypto space, there's still a chance to regain that amount. However, next time, let's be wiser and avoid making the same mistake.

Perhaps consider setting up a dedicated PC for your wallet to prevent compromise in case new applications are installed.