RE: Need to change ownership for Venue 8 Pro
Here's where you can update the Dell ownership records:
And what your daughter-in-law or you then might want to do is to re-set the DV8P back to the factory settings, and then set the tablet up as she likes for herself, including with her own ID. To do this, do a search on the machine for "reset" and choose the re-install Windows option. Very easy to do!