If all your files from the PC appear on the laptop, and if you make changes to a file on your PC and those changes are reflected on the laptop, then your daughter set up OneDrive to sync your files between the two devices.
If this is the case, do not delete your files manually from the laptop, because they would also be deleted form the PC.
If you intend to sell the laptop, then the best option is to create a new user account (not associated to your Microsoft account) on the laptop and delete the current account from the laptop to remove all your files and settings from the laptop.
Open the Settings App
Go to Accounts - Other Users.
Click 'Add Account'.
Follow the prompts to create a new account, ensure you choose the option 'I do not know this person's details' so you do not have to add Microsoft account details and the new account is a local account.
Close the settings app
Log out of the original user account
Log into your new account
Click the Start Button, type netplwiz and hit Enter
In the resulting dialog, select the old account and click 'Remove'
That's It, your new Admin Account will replace the old account with all your files and settings.