When Windows 365 was originally shared with my wife's computer it landed in her administrator account and that's where it continues to function. For security reasons, it should be in a user or Member account, but I can find no way to change it. I've tried to change her account status under Manage Account but can find no avenue. Trying to add her again is rejected because that email addressed account already exists.

The only option I haven't yet tried is to remove her shared account under the administrator and then re-share it with her user account with Member status instead. If I did this will all of her current info and data on Office 365 be lost or will it recognize the same email name and reattach her data?

My computer has Windows 10 Pro; Version 1903 (OS Build18362.900)
Her's is plain Windows 10; Version 1909 (OS Build 18363.900)