Are you sure you have 0 balance now? In many cases will a new change address created. You own this address and your coins are not gone. Check this:
https://en.bitcoin.it/wiki/ChangeI think the 194 ETHD landed in your change adress.
maybe just locked your account will be great idea, i just did. and you will get more chances to staking if you encrypted your wallet.
just saying anyway, and it will more safety for your coin.