TheShillBilly: do you realize exactly the mistakes you made, so others can learn ? I'm asking because the fact that you exposed your key to a forked wallet is not reason you lose your coins. In this case you can easily go after the GitHub user IP and track him or report this to authorities. There was a similar case like yours and police was able to catch the bad guy. Have you scanned your system for viruses ?
Don't desperate, there are ways to recover funds if you do proper open-intelligence research.
For community sake, hopefully you get your funds back!