If you are sharing an Apple ID then all data and files are shared. This is simply they way an Apple ID works. Each person is supposed to have their own Apple ID. and not be shared.
But again, this would have nothing to do with One Drive since that is a Microsoft service. And would have no relation to your Apple ID. You need to really identify what it is that its being shared before we can actually provide a solution.
If she is signed in to your Apple ID, it would still be recommended to sign out of it and use her own Apple ID.
Apps installed on her iPad would not be removed from the iPad, however if she is using your Apple ID for iCloud, then yes some of the data may no longer be accessible when logged in to her own Apple ID.