When someone has your wallet.dat and the password, he has access to all CHI inside the wallet no matter the addresses.
What you should do is, to just create new wallet.dat's.
Go here and make sure your wallet isn't running:
Then make sure to rename the wallet.dat's that are in these folders, maybe to "lostvault.dat" and "lostgame.dat". Then start the wallet. This will create a new wallet and thus two new wallet.dat for game and vault. Encrypt the wallet and make sure to have the password stored in a safe place. Make a backup of your wallet in settings. Create an address and save it in editor or Word for the time being. Exit the wallet.
Go back to
and now rename the newly created wallet.dat's, maybe to "newvault.dat" and "newgame.dat". Your old, partially lost wallet.dat's you have to rename to wallet.dat now. The wallet always gets its information from the file called wallet.dat inside these folders. If there is no wallet.dat in it, it will just create a new one. Start the wallet again, you should now see your CHI again, which you want so send away. Go to send and send the CHI to the address that you created with the new wallet and saved in editor or Word. Exit the wallet again.
Afterwards you have to go back to the folders:
Your old wallet.dat's you have to rename again, maybe again "lostvault.dat" and "lostgame.dat" and your newly created wallet.dat's, which you renamed probably to "newvault.dat" and "newgame.dat" just some minutes ago will be named to "wallet.dat" again. Start the wallet again and the CHI should have arrived on your new, safe wallet.
When changing your wallet.dat's, the wallet might take some time upon starting. Don't be scared by that, just wait a bit.
If you happen to have a telegram account, you can contact me @tyKiwanuka in Telegram and I can assist you with the process (in german, I think you are german-speaking^^).
This video might also be of some help to handle the wallet.dat's: https://forum.xaya.io/topic/231-video-how-to-back-up-a-wallet-and-restore-wallet-backups/